Gmail apps, add-ons, and extensions are tools that extend Gmail’s built-in functionality. They add features like email tracking, CRM integration, task management, encryption, and inbox organization that Gmail doesn’t offer on its own.

The right combination of Gmail tools can save you hours each week. In our testing, teams that added just two or three well-chosen extensions reduced their daily email management time by 15 to 30 minutes.

This guide covers 54 tools organized into three categories: built-in Gmail extensions, third-party Gmail apps, and Chrome extensions. Each entry includes a quick summary, key features, and guidance on who should use it.

Key Terms

Gmail Add-On: A tool installed through the Google Workspace Marketplace that integrates directly into Gmail’s right-hand sidebar. Add-ons work across devices and don’t require a separate browser extension.

Gmail Extension: A Chrome browser plugin that modifies or adds features to Gmail’s web interface. Extensions only work in the Chrome browser and won’t appear in the Gmail mobile app.

Gmail App: A standalone application that connects to Gmail through an API or integration. Apps like Todoist and Asana exist independently but sync with Gmail to create tasks from emails or display project data in your inbox.

Google Workspace Marketplace: Google’s official app store for Gmail and Google Workspace add-ons. Accessible from Gmail by clicking Settings and then “Get add-ons.”

Email Tracking: A feature that notifies you when a recipient opens your email. Tracking tools embed a tiny invisible pixel in outgoing messages and detect when it loads.

PGP Encryption: Pretty Good Privacy encryption secures email content so only the intended recipient can read it. Tools like FlowCrypt add PGP encryption to Gmail’s compose window.

Inbox Zero: A productivity philosophy that aims to keep your inbox empty or near-empty at all times. Tools like ActiveInbox and SaneBox help users work toward this goal by converting emails into tasks and filtering low-priority messages.

Email Scheduling: The ability to compose an email now and set it to send at a future date and time. Gmail offers basic scheduling natively, but tools like Right Inbox and Gmelius add more advanced options.

How We Evaluated These Tools

We evaluated each tool based on five criteria: functionality, ease of installation, Gmail integration quality, pricing, and ongoing maintenance by the developer.

Functionality measures what the tool actually does and whether it solves a real productivity problem. We prioritized tools that deliver measurable time savings over novelty features.

Ease of installation covers how quickly a new user can get the tool running in Gmail. One-click installs scored higher than tools requiring complex configuration or separate account creation.

Integration quality evaluates how well the tool works inside Gmail’s interface. The best tools feel native to Gmail rather than forcing you to switch between windows or tabs.

Pricing considers the tool’s free tier, paid plans, and overall value. Many Gmail extensions offer free versions with limited features, making them accessible for individual users and small teams.

Ongoing maintenance checks whether the developer actively updates the tool. We’ve flagged tools that have been discontinued, delisted, or acquired, with notes on their current status and recommended alternatives.

A Note on Terminology

We’ve grouped these tools into three categories based on how they function. Built-in Gmail extensions are features already in Gmail that rely on external Google services. Third-party Gmail apps are standalone applications that integrate with Gmail. Chrome Gmail extensions are browser plugins that add features directly to Gmail’s web interface.

There’s overlap between categories. Some apps include a Chrome extension for easier access, while some extensions belong to larger standalone apps. We’ve categorized each tool by its primary use case.

Many Gmail apps and extensions also appear in the Google Workspace Marketplace as Google Workspace add-ons. You can find these by clicking Settings in Gmail, then “Get add-ons.”

Built-In Gmail Extensions

These features come with Gmail by default and connect to other Google services. They’re available in the current version of Gmail without any additional installation.

1. Google Calendar

Quick Summary

Google Calendar’s Gmail integration shows your schedule in the right-hand sidebar and lets you create events from any email with two clicks. It’s essential for anyone who manages meetings through Gmail.

Google Calendar appears as an icon in Gmail’s right-hand panel. Click it to see your full schedule without leaving your inbox. When viewing an email, click the vertical ellipses menu to “Create event” and convert any message into a calendar entry.

The integration pulls event details from the email body, pre-filling the title and description. You can also open Calendar in its own tab for full functionality by clicking the arrow icon in the sidebar.

• View your full schedule in Gmail’s right sidebar without switching tabs or windows
• Convert any email into a calendar event with pre-filled details from the message
• See availability at a glance when scheduling meetings or responding to invites
• Syncs across all devices where you use Google Calendar
• No installation required, it’s built into every Gmail account

Who Should Choose Google Calendar

• Anyone who schedules meetings or events through email and wants quick access to their calendar
• Teams that use Google Workspace and want seamless scheduling without third-party tools
• Professionals who receive many meeting requests and need to check availability without leaving Gmail

2. Google Keep

Quick Summary

Google Keep adds a note-taking sidebar to Gmail that lets you create, tag, and search notes directly from your inbox. You can tag notes to specific emails for easy cross-referencing.

Google Keep sits below the Calendar icon in Gmail’s right panel. Click it to create quick notes, checklists, and reminders without leaving your inbox.

The integration lets you tag notes to specific emails, creating a cross-reference system between your inbox and your notes. You can search through your entire note collection from the Gmail sidebar or open Keep in a full tab.

• Create and manage notes, checklists, and reminders from Gmail’s sidebar
• Tag notes to specific emails for instant cross-referencing between messages and notes
• Color-code and organize notes into lists and sub-lists for visual prioritization
• Search through all notes directly from the Gmail interface
• Syncs across all devices where you use Google Keep

Who Should Choose Google Keep

• Users who take notes while processing email and want them linked to specific messages
• Teams that prefer a lightweight note-taking tool over a full project management platform
• Anyone already using Google Keep who wants seamless access from their Gmail inbox

3. Google Tasks

Quick Summary

Google Tasks is Gmail’s built-in task manager. You can convert emails into tasks with a single click and manage them in separate lists with due dates and completion tracking.

Tasks appears as the third icon in Gmail’s right sidebar. It lets you create simple task items, organize them into lists, and mark them complete with a single click.

The most useful feature is the ability to convert emails directly into tasks. Click the vertical ellipses on any email, select “Add to Tasks,” and the message becomes a tracked to-do item. Completed tasks move to a separate list for reference.

• Convert any email into a task with one click to ensure follow-ups don’t get lost
• Organize tasks into separate lists for different projects or priorities
• Mark tasks complete and review your completed list for accountability
• Set due dates and receive reminders for time-sensitive follow-ups
• Built into Gmail with no installation required

Who Should Choose Google Tasks

• Users who want basic task management without installing a third-party tool like Todoist or Asana
• Professionals who receive action-item emails and need a quick way to track follow-ups
• Teams looking for a zero-cost task list that integrates natively with Gmail and Google Calendar

4. Google Drive

Quick Summary

Google Drive’s Gmail integration adds a Drive icon to the email compose window. You can attach files stored in Drive to any outgoing email without downloading them first.

Google Drive integrates into Gmail’s compose window rather than the sidebar. When drafting a new email, click the Drive icon in the bottom toolbar to browse and attach files directly.

Your recipients don’t need to be Gmail or Drive users. They’ll receive a shareable link to the file that works in any browser. This is especially useful for files larger than Gmail’s 25 MB attachment limit.

• Attach Drive files to outgoing emails without downloading them to your computer first
• Share files larger than Gmail’s 25 MB attachment limit using Drive’s link sharing
• Recipients can view shared files in any browser, no Google account required
• Browse your full Drive file structure from within the Gmail compose window
• Control sharing permissions (view, comment, edit) directly from the compose window

Who Should Choose Google Drive

• Teams that store documents, presentations, and spreadsheets in Google Drive and share them via email
• Anyone who regularly sends files larger than Gmail’s 25 MB attachment limit
• Organizations using Google Workspace that want seamless file sharing across their team

5. Gmail Offline

Quick Summary

Gmail Offline lets you read, search, and compose emails without an internet connection. Messages send automatically once you reconnect.

You’ll find this feature in Gmail’s Settings under the Offline tab. Once enabled, Gmail stores a local copy of your inbox so you can access it during travel, spotty Wi-Fi, or internet outages.

You can customize how many days of email to store offline and whether to download attachments. Any emails you compose offline queue automatically and send when your connection returns.

• Read, search, and compose emails without an internet connection
• Customize storage duration and choose whether to download attachments offline
• Outgoing messages queue automatically and send when connectivity returns
• Keep offline data on your computer for persistent access between sessions
• No installation required, it’s a built-in Gmail setting

Who Should Choose Gmail Offline

• Frequent travelers who need to process email on flights, trains, or in areas with poor connectivity
• Remote workers in locations with unreliable internet who can’t afford downtime
• Anyone who wants to compose emails during commutes and have them send automatically later

Beyond these built-in extensions, Gmail offers dozens of native features and tricks for inbox management. We’ve covered most of those in a separate post.

Third-Party Gmail Apps

These standalone applications integrate with Gmail to extend its capabilities. Some were built specifically for Gmail, while others are independent tools with Gmail connectivity. Be sure to also check out our post on the best Chrome productivity extensions.

6. EmailAnalytics

Quick Summary

EmailAnalytics visualizes your Gmail activity with metrics like emails sent and received, top contacts, response times, and traffic patterns by hour and day. It’s the best tool for measuring how your team actually uses email.

EmailAnalytics connects directly to your Gmail account and pulls behavioral data that Gmail doesn’t surface on its own. You can see how many emails you’re sending and receiving, who your top correspondents are, and how your email volume changes throughout the day and week.

For managers, it’s a powerful accountability tool. You can track team-wide response times, identify bottlenecks, and balance workloads based on actual email data. Interactive visuals make the data intuitive at a glance.

• Track emails sent, received, and response times across your entire team
• Visualize email traffic patterns by hour, day of week, and contact
• Monitor team productivity and identify bottlenecks in email workflows
• Measure the impact of other Gmail tools and workflow changes on your email performance
• Connects directly to Gmail with a simple setup process

Who Should Choose EmailAnalytics

• Sales and customer service managers who need visibility into team email activity and response times
• Individuals who want to understand and optimize their personal email habits
• Teams implementing new email tools or workflows who need data to measure the impact

7. Right Inbox

Quick Summary

Right Inbox adds email scheduling, follow-up reminders, and reusable templates to Gmail. It’s a productivity upgrade for anyone who sends timed emails or needs reminder-based follow-ups.

Right Inbox for Gmail lets you schedule emails to send at a future date and time. You can also set follow-up reminders: if you don’t hear back within a specified window, Right Inbox prompts you to follow up. (For Gmail’s native scheduling, see our post on how to schedule an email to send later in Gmail.)

Sales and marketing professionals particularly value the templates feature. Turn your best-performing emails into reusable templates that your team can deploy at scale.

• Schedule emails to send at a future date and time for optimal delivery
• Set automated follow-up reminders when recipients don’t respond within your chosen window
• Create reusable email templates from your best-performing messages
• Track email opens to see when recipients read your messages
• Add private notes to email threads for internal context

Who Should Choose Right Inbox

• Sales reps who send time-sensitive emails and need automated follow-up reminders
• Teams that reuse similar email copy and want a shared template library inside Gmail
• Professionals in different time zones who schedule emails for optimal delivery times

8. WiseStamp

Quick Summary

WiseStamp lets you design professional, branded email signatures with social links, headshots, and custom layouts. It’s ideal for teams that want consistent branding across every outgoing email.

WiseStamp helps you build a polished email signature that includes your name, title, company, social media links, headshot, and more. Free templates handle the basics, while paid plans unlock full customization.

For freelancers and entrepreneurs, WiseStamp also offers the option to create a personal website and digital business cards alongside your email signature.

• Design professional email signatures with headshots, logos, social links, and custom layouts
• Choose from free templates or build a fully custom signature from scratch
• Ensure consistent branding across your entire team’s email signatures
• Add promotional banners, CTAs, or event announcements to your signature
• Optional website and digital business card creation for freelancers and entrepreneurs

Who Should Choose WiseStamp

• Teams that want uniform, professional email signatures across every team member’s outgoing email
• Freelancers and entrepreneurs who need a polished personal brand in every message they send
• Marketing teams that want to use email signatures as a promotional channel for events or content

9. Virtru

Quick Summary

Virtru adds end-to-end encryption to Gmail, letting you control who can view your emails, revoke access after sending, and set expiration dates on sensitive messages.

Virtru protects your Gmail messages with end-to-end encryption through a Google Workspace integration. You can set rules that limit who can view specific emails and when.

The Virtru dashboard lets you create custom security rules based on content type or recipient. You can add or revoke viewing permissions after sending, and even watermark attached PDFs for added security.

• End-to-end encryption for Gmail messages that keeps content private from third parties
• Revoke access to sent emails at any time, even after the recipient has opened them
• Set expiration dates so sensitive emails automatically become inaccessible
• Watermark PDF attachments to deter unauthorized sharing
• Custom security rules that trigger based on content type, recipient, or keywords

Who Should Choose Virtru

• Organizations handling sensitive data (healthcare, legal, finance) that need email encryption for compliance
• Teams that share confidential documents via email and need to control access after sending
• Security-conscious professionals who want granular control over who can read their messages

10. BombBomb

Quick Summary

BombBomb lets you record, send, and track video messages directly through Gmail. It’s built for sales teams that want to replace text-heavy emails with personal video outreach.

BombBomb is a video email tool geared toward sales and marketing professionals. Record your screen or camera, send the video through Gmail, and track who watched it and when. (For video calls instead of video messages, see our guide on how to Gmail video call.)

Video messages stand out in crowded inboxes. In our experience, video emails from BombBomb earn higher open and reply rates than standard text emails, especially for sales introductions and product demos.

• Record and send video messages directly from the Gmail compose window
• Screen recording for product demos, walkthroughs, and tutorials
• Track who watched your videos, when they watched, and how much they viewed
• Embed video thumbnails in emails that play when clicked
• Integrates with CRMs like Salesforce and HubSpot for sales workflow tracking

Who Should Choose BombBomb

• Sales reps who want to stand out in prospects’ inboxes with personal video introductions
• Customer success teams that send product walkthroughs and onboarding videos via email
• Anyone who finds it faster and more personal to record a quick video than type a long email

11. Unroll.me

Quick Summary

Unroll.me generates a list of every email subscription in your Gmail account, then lets you unsubscribe from any or all of them in a single session. It’s a one-time fix that saves 10 or more minutes daily.

Unroll.me scans your Gmail account and produces a master list of every newsletter, marketing email, and subscription you’ve signed up for. From a single dashboard, you can unsubscribe from anything you no longer want. How much time do you waste each day deleting unwanted emails? For most people, the answer is “too much.”

The entire process takes about 15 minutes and can save you upwards of 10 minutes per day in ongoing inbox management. It’s free and requires no ongoing maintenance after the initial cleanup.

• Scans your entire inbox and lists every active email subscription in one dashboard
• Unsubscribe from multiple subscriptions with a single click each
• Consolidate newsletters you want to keep into a daily digest email
• Free to use with no ongoing subscription required
• Works with Gmail, Outlook, and Yahoo! Mail accounts

Who Should Choose Unroll.me

• Anyone with a cluttered inbox full of newsletter and marketing emails accumulated over years
• Professionals who want a one-time cleanup tool rather than an ongoing subscription service
• Teams implementing inbox management policies who want a fast way to reduce email volume

12. Todoist

Quick Summary

Todoist is a task management app with a Gmail integration that turns emails into actionable tasks. It offers more flexibility than Gmail’s built-in Tasks, including color-coded priorities and cross-platform syncing.

Todoist offers a Gmail integration that lets you convert any email into a task with a single click. The task inherits the email’s subject line and includes a link back to the original message for context.

Compared to Gmail’s native Tasks feature, Todoist offers more sophisticated organization. You get color-coded priority levels, project grouping, recurring due dates, and detailed tracking across all your devices.

• Convert Gmail emails into Todoist tasks with one click, linked back to the original message
• Color-coded priority levels (P1 through P4) for visual task ranking
• Organize tasks into projects, sections, and sub-tasks for complex workflows
• Recurring due dates and natural language date parsing for fast task creation
• Cross-platform sync across web, desktop, and mobile apps

Who Should Choose Todoist

• Users who outgrow Gmail’s built-in Tasks and need more advanced project organization
• Professionals who manage tasks across email, web, and mobile and need everything synced
• Teams that use Todoist as their primary task manager and want seamless Gmail integration

13. Astro (Discontinued)

Quick Summary

Astro was an AI-powered email management app that prioritized your inbox automatically. It was acquired by Slack in September 2018 and shut down in October 2018. It’s no longer available.

Astro used AI to prioritize emails, manage your calendar, and serve as a digital assistant. It worked across iOS, Android, Slack, and Amazon Alexa.

Slack acquired Astro in September 2018, and the app ceased operations in October 2018. New signups were disabled, and all apps were removed. If you’re looking for AI-powered inbox management, consider SaneBox (#23) or Sortd (#25) as alternatives.

• AI-driven email prioritization that surfaced your most important messages first
• Digital assistant for scheduling, searching, and simple task management
• Worked across multiple platforms including Slack and Alexa
• Status: Discontinued. Acquired by Slack in 2018 and shut down permanently
• Alternatives: SaneBox for smart filtering, Sortd for inbox organization

Who Should Choose Astro

• This tool is no longer available. Consider SaneBox for AI-powered inbox filtering or Sortd for email organization as alternatives

14. Giphy

Quick Summary

Giphy for Gmail adds a GIF search button to the compose window, letting you find and embed animated GIFs in your emails. It’s a fun addition for informal team communication.

Giphy for Gmail adds a search button to the email compose box. Type a keyword, browse GIF results, and click to embed one in your email. Here’s our guide on how to include a GIF in an email.

While GIFs aren’t appropriate for formal client communication, they can add personality to team conversations and internal messages. Use them sparingly in professional contexts.

• Search Giphy’s full GIF library directly from the Gmail compose window
• One-click embedding of GIFs into outgoing emails
• Browse trending and popular GIFs or search by keyword
• Free to use with no account required
• Works as both a Chrome extension and a Gmail integration

Who Should Choose Giphy

• Teams with casual internal communication cultures who use humor and personality in messages
• Marketing professionals who want to add visual interest to newsletter or promotional emails
• Anyone who enjoys adding expressive GIFs to messages with friends, family, and close colleagues

15. Streak

Quick Summary

Streak is a CRM built entirely inside Gmail. It lets you track deals, manage pipelines, and monitor email engagement without leaving your inbox.

Streak turns Gmail into a full CRM platform. When integrated, you can track email opens, sort emails into pipeline stages, manage contacts, and share deal information with your team, all without leaving Gmail.

Streak also includes customizable snippets for frequently used text, mail merge for bulk personalized emails, and thread splitting for complex conversations. It’s especially strong for sales, marketing, hiring, and deal-tracking workflows.

• Full CRM pipeline management built directly into the Gmail interface
• Email tracking shows when recipients open your messages and click links
• Mail merge for sending personalized bulk emails from Gmail
• Customizable snippets that insert frequently used text with keyboard shortcuts
• Shared pipelines so your team can collaborate on deals and contacts inside Gmail

Who Should Choose Streak

• Small sales teams that want a CRM without leaving Gmail or learning a separate platform
• Hiring managers tracking candidates through interview stages via email
• Teams that manage deal flow, partnerships, or projects primarily through email communication

16. Asana

Quick Summary

Asana’s Gmail integration lets you turn emails into Asana tasks and view Asana conversations from your inbox. It bridges the gap between email communication and project management.

Asana is a project management platform with a Gmail add-on that appears in your sidebar. When viewing an email, you can convert it into an Asana task with pre-filled details, or pull up related Asana conversations without switching tabs. Check out our guide to Asana for more details.

The integration works best for teams already using Asana. It eliminates the friction of copying email content into tasks manually, which saves time and ensures nothing falls through the cracks.

• Turn Gmail emails into Asana tasks with pre-filled title, description, and attachments
• View Asana project conversations directly in Gmail’s sidebar
• Assign tasks to team members and set due dates from within Gmail
• Link emails to existing Asana projects and tasks for context
• Available as a Google Workspace add-on with sidebar integration

Who Should Choose Asana

• Teams already using Asana who want to create tasks from email without switching to a separate tab
• Project managers who receive task requests via email and need a fast path to their PM tool
• Organizations that need to bridge email-based communication with structured project workflows

17. Trello

Quick Summary

Trello’s Gmail add-on lets you convert emails into Trello cards, turning subject lines into card titles and email bodies into descriptions. It’s ideal for teams that organize work in Trello’s kanban-style boards.

Trello is a kanban-style project management tool. Its Gmail add-on appears in your sidebar and lets you convert emails directly into Trello cards. The email’s subject line becomes the card title, and the body becomes the description.

You can also preview Trello board content from within Gmail, assign cards to team members, and add labels or due dates. The integration is strongest for teams that track work in phases or stages.

• Convert Gmail emails into Trello cards with automated title and description mapping
• Preview Trello boards and cards directly from Gmail’s sidebar
• Assign cards to team members and add due dates, labels, and attachments
• Choose which Trello board and list to add the card to during creation
• Available as a Google Workspace add-on for seamless sidebar access

Who Should Choose Trello

• Teams that use Trello’s kanban boards and want to route email requests directly into their workflow
• Small teams that prefer visual project management over list-based tools like Asana or Todoist
• Customer service teams tracking support requests through stage-based Trello boards

18. Smartsheet

Quick Summary

Smartsheet’s Gmail integration lets you convert emails into rows in a Smartsheet project, complete with attachments. It’s built for teams that manage work in spreadsheet-style project plans.

Smartsheet combines spreadsheet functionality with project planning, calendars, forms, and automation. Like Asana, Trello, and Monday, its Google Workspace integration lets you access Smartsheet functions from within Gmail.

When viewing an email, you can convert it into a task or row in any Smartsheet project. The integration also pulls email attachments into Smartsheet automatically.

• Convert Gmail emails into Smartsheet rows or tasks with attachments included
• Access Smartsheet project data from Gmail’s sidebar without switching tabs
• Add email content to existing projects or create new items on the fly
• Spreadsheet-style project management with calendars, Gantt charts, and forms
• Automation rules that trigger actions based on email content or project changes

Who Should Choose Smartsheet

• Teams that manage complex projects in spreadsheet-style layouts with Gantt charts and dependencies
• Operations and PMO teams that receive requests via email and route them into Smartsheet workflows
• Organizations already using Smartsheet that want faster email-to-project routing

19. Wrike

Quick Summary

Wrike’s Gmail add-on lets you create tasks from emails, access task details, and update project status without leaving your inbox. It specializes in team collaboration and cross-functional project management.

Wrike is a collaboration-focused project management platform. Its Gmail app lets you create tasks from emails, add all email content to the task description, and access task details and status updates from the Gmail sidebar.

You can also commit changes like status updates, assignee changes, and new comments directly from Gmail. This eliminates the need to switch between your inbox and your project management tool.

• Create Wrike tasks from Gmail emails with full content and attachment import
• Access and update task details, status, and assignees from Gmail’s sidebar
• Add comments to Wrike tasks without leaving your inbox
• Cross-functional project views that span multiple teams and departments
• Real-time collaboration features including proofing, approvals, and time tracking

Who Should Choose Wrike

• Cross-functional teams that collaborate on projects spanning multiple departments
• Teams already using Wrike that want to create and update tasks directly from email
• Organizations with complex approval workflows that start with email-based requests

20. Dialpad

Quick Summary

Dialpad’s Gmail integration lets you make calls, send messages, and view communication history directly from Gmail. It’s a cloud communications tool that bridges email and voice in one interface.

Dialpad is a cloud business communications provider and Google Workspace partner since 2015. Its Gmail add-on lets you make calls, send messages, add contacts from email, and view call history without leaving Gmail.

The integration is most valuable when you need to follow up on an email with a phone call. You can dial a contact directly from their email and have the full communication thread, email and calls, in one place.

• Make voice calls and send SMS messages directly from the Gmail interface
• Add Gmail contacts to your Dialpad directory with one click
• View complete communication history (calls, messages, voicemails) alongside email threads
• AI-powered call transcription and summarization for meeting notes
• Click-to-call from any phone number in your Gmail inbox

Who Should Choose Dialpad

• Sales teams that follow up on email conversations with phone calls and want both channels in one place
• Organizations already using Dialpad for business communications who want Gmail integration
• Customer-facing teams that need to switch between email and phone without losing conversation context

21. Copper (Formerly ProsperWorks)

Quick Summary

Copper (formerly ProsperWorks) is a CRM built specifically for Google Workspace. It automatically captures contacts and activities from Gmail, eliminating manual data entry for sales teams.

Copper (renamed from ProsperWorks in 2018) is designed to work natively with Gmail and Google Workspace. It automatically logs emails, tracks contacts, and organizes your pipeline without requiring you to manually enter data into the CRM.

Copper’s Gmail sidebar shows full contact records, deal information, and activity history alongside your email threads. It also includes a bot for team chats that notifies you when significant changes occur in your lead pool.

• Automatically captures contacts, emails, and activities from Gmail without manual data entry
• Gmail sidebar displays full contact records, deal status, and relationship history
• Pipeline management with customizable stages, reports, and forecasting
• Built on Google Material Design for an interface that feels native to Google Workspace
• Automated lead nurturing with workflow triggers and email sequences

Who Should Choose Copper

• Small to mid-sized businesses that run their operations on Google Workspace and want a CRM that fits naturally
• Sales teams tired of manual CRM data entry who want contacts and activities auto-captured from Gmail
• Creative agencies, real estate firms, and consulting companies that manage relationships primarily through email

22. Mailstrom

Quick Summary

Mailstrom is an inbox cleaning tool that lets you filter, sort, and bulk-delete emails by sender, subject, size, time, and type. It works across Gmail, Outlook, and Yahoo! Mail.

Mailstrom gives you sorting and filtering options that Gmail’s native search can’t match. Filter by sender, subject line, received date, email size, or message type, then bulk-delete or archive the emails you don’t need.

It’s a powerful tool for periodic inbox cleanups, especially if you’ve accumulated thousands of emails over months or years. The tool also helps you identify patterns to reduce incoming clutter going forward.

• Sort and filter emails by sender, subject, size, date, and type for targeted cleanup
• Bulk delete, archive, or move thousands of emails in a single action
• Identify patterns in inbox clutter to reduce future email volume
• Works across Gmail, Outlook, and Yahoo! Mail accounts
• Visual dashboard shows your inbox composition at a glance

Who Should Choose Mailstrom

• Anyone with an overflowing inbox who needs a one-time deep clean of thousands of accumulated emails
• Users who manage multiple email accounts and want a single tool for bulk inbox management
• Professionals who want to identify and block repeat sources of inbox clutter

23. SaneBox

Quick Summary

SaneBox uses AI to automatically sort your incoming email. Important messages stay in your inbox, while less urgent emails route to a “SaneLater” folder and newsletters consolidate into a daily digest.

SaneBox integrates with almost any email account, including Gmail. Its AI learns from your email behavior and automatically routes low-priority messages out of your inbox into organized folders.

The “SaneLater” folder holds non-urgent emails for batch review, while the “SaneNews” folder consolidates newsletters. You can also create custom folders and flag emails that haven’t received a reply.

• AI-powered email sorting that learns from your reading and response patterns
• SaneLater folder holds non-urgent emails for batch review at your convenience
• SaneNews consolidates newsletters and marketing emails into a single daily digest
• SaneNoReplied flags sent emails that haven’t received a response
• Custom folders and rules for personalized email routing

Who Should Choose SaneBox

• High-volume email users who receive 100+ messages daily and need automated triage
• Executives and managers who want only critical emails in their primary inbox
• Teams looking for an ongoing, intelligent filtering solution rather than a one-time inbox cleanup

24. Gmelius

Quick Summary

Gmelius adds shared inboxes, email tracking, scheduling, and team assignment features to Gmail. It turns your inbox into a collaborative workspace for customer service and account management teams.

Gmelius combines email tracking, email scheduling, and team collaboration in a single Gmail integration. You can see when emails are opened and clicked, schedule messages for later, and assign incoming emails to team members.

The shared inbox feature is especially valuable for customer service and account management teams. You can route customer emails to the right person, add internal notes, and automate repetitive tasks.

• Shared inboxes let teams manage customer emails collaboratively inside Gmail
• Assign emails to specific team members with internal notes and status tracking
• Email tracking shows opens, clicks, and read receipts for sent messages
• Schedule emails to send at optimal times with follow-up automation
• Kanban boards and workflow automation built directly into the Gmail interface

Who Should Choose Gmelius

• Customer service teams that share a team inbox and need to assign and track email ownership
• Account management teams that want internal notes and collaboration features inside Gmail
• Small teams looking for a lightweight help desk solution without leaving the Gmail interface

25. Sortd

Quick Summary

Sortd transforms your Gmail inbox into a drag-and-drop kanban board. Organize emails into lists, set reminders, rename subjects, and manage tasks in a Scrum-style visual layout.

Sortd converts your messy Gmail inbox into organized columns. Drag emails into different lists by priority, project, or task type. Set reminders, snooze emails, and rename subject lines for better organization.

Most users configure Sortd as a Scrum-style board with columns for To Do, In Progress, and Done. It works for sales tracking, hiring workflows, project planning, and general inbox management.

• Drag-and-drop kanban board that organizes Gmail emails into visual columns
• Rename email subject lines for better organization and searchability
• Set reminders and snooze emails to resurface at the right time
• Track email status across customizable workflow stages
• Free plan available with paid plans starting at $10/user/month

Who Should Choose Sortd

• Visual thinkers who prefer kanban-style organization over traditional inbox lists
• Sales reps who track deals and prospects through email and want a pipeline view inside Gmail
• Anyone who struggles with inbox organization and wants a structured system without a separate tool

26. Find Big Mail

Quick Summary

Find Big Mail identifies and sorts the largest emails in your inbox so you can delete them and reclaim storage space. It’s the fastest way to free up your Gmail’s 15 GB of free storage.

Find Big Mail scans your Gmail account and identifies the emails consuming the most storage. Gmail offers 15 GB of free storage, but large attachments can fill that up faster than you’d expect.

The tool sorts your emails by size, making it simple to find and delete the biggest space hogs. It’s a targeted cleanup tool for users who are approaching their storage limit.

• Scans your Gmail account and ranks emails by storage size
• Identifies the biggest attachments consuming your 15 GB of free storage
• One-click deletion of large emails to reclaim storage space fast
• Free to use with no ongoing subscription required
• Labels large emails in your inbox for easy identification

Who Should Choose Find Big Mail

• Users approaching Gmail’s storage limit who want to free up space without deleting everything
• Professionals who frequently send and receive large file attachments via email
• Anyone who wants a targeted cleanup rather than a full inbox overhaul

27. BatchedInbox

Quick Summary

BatchedInbox holds your incoming emails and delivers them in scheduled batches at intervals you choose. It reduces distraction by letting you process email on your terms instead of reacting to every notification.

BatchedInbox tackles a common productivity problem: constant email interruptions. Instead of receiving emails in real time, you set delivery intervals (such as every 45 minutes), and BatchedInbox holds messages until the next batch.

This lets you focus on deep work between batches and process email in dedicated sessions. It’s especially effective for knowledge workers and managers who lose focus every time a new message arrives.

• Holds incoming emails and delivers them at scheduled intervals you configure
• Customizable batch timing from every 15 minutes to a few times per day
• Reduces email-driven distraction and supports deep work periods
• Processes email on your schedule rather than the sender’s timeline
• Simple setup with no complex configuration required

Who Should Choose BatchedInbox

• Knowledge workers who lose focus when emails arrive continuously throughout the day
• Managers and executives who want to process email in dedicated sessions rather than reactively
• Anyone experimenting with time-blocking or deep work strategies for productivity

28. The Email Game

Quick Summary

The Email Game gamifies inbox management by giving you a fixed time to act on each email. It’s a fun way to power through a backlog by removing the tedium of scrolling through messages one by one.

The Email Game turns inbox cleanup into an interactive challenge. Once connected to your Gmail account, it presents emails one at a time and gives you a fixed window to decide: reply, forward, archive, or delete.

Taking a positive action (anything except skipping) earns points and makes the on-screen face happier. It’s a surprisingly effective way to work through email backlogs without the usual monotony.

• Gamified inbox processing with timed decisions on each email
• Options to reply, forward, archive, delete, or skip each message
• Points system that rewards decisive action over procrastination
• Removes the overwhelm of a long email list by presenting messages one at a time
• Free to use and connects directly to your Gmail account

Who Should Choose The Email Game

• Anyone with a massive email backlog who wants a motivating way to work through it
• Users who procrastinate on email and respond well to gamified productivity tools
• Teams looking for a fun, low-stakes way to build better inbox management habits

Chrome Gmail Extensions

These Chrome browser extensions add features directly to Gmail’s web interface. Most are free or offer generous free tiers, and they install in seconds from the Chrome Web Store. Unlike standalone apps, they work inside Gmail without requiring you to switch tabs or windows.

29. Send From Gmail

Quick Summary

Send From Gmail makes Gmail the default email handler for all “mailto:” links on the web. It’s a small but essential fix for Chrome users who want email links to open in Gmail instead of Outlook or another client.

Send From Gmail solves a common annoyance. When you click a “Contact Us” or email link on a website, your browser may open Outlook, Yahoo, or another email client by default. This extension routes all those links to Gmail instead.

It’s a simple one-time install that eliminates a recurring frustration. Once enabled, every mailto link on the web opens a new Gmail compose window.

• Makes Gmail the default handler for all mailto: links across the web
• One-click install with no configuration required
• Eliminates the need to copy-paste email addresses into Gmail manually
• Made by Google for guaranteed compatibility with Gmail and Chrome
• Free with no subscription or account required

Who Should Choose Send From Gmail

• Chrome users who rely on Gmail and want mailto: links to open in Gmail instead of another client
• Sales and outreach professionals who frequently click email links on prospect websites
• Anyone frustrated by email links opening in the wrong application

30. Clearbit Connect

Quick Summary

Clearbit Connect enriches your Gmail contacts with company data, job titles, social profiles, and more. It also lets you find anyone’s email address without leaving your inbox.

Clearbit Connect is a Gmail extension from Clearbit, a data enrichment platform used by sales teams. It adds a sidebar widget to Gmail that shows detailed information about the people you’re emailing: company, title, location, social profiles, and more.

You can also use it to search for email addresses. Type a person’s name and company, and Clearbit Connect returns their email address directly in your Gmail interface.

• Automatic contact enrichment showing company, title, location, and social profiles
• Email address lookup by name and company without leaving Gmail
• Sidebar widget that displays contact details alongside your email threads
• Integrates with Salesforce, HubSpot, and other CRMs for data syncing
• Free tier with limited lookups per month

Who Should Choose Clearbit Connect

• Sales reps who want contact enrichment data alongside their email conversations
• Business development teams that need to find prospect email addresses quickly from Gmail
• Anyone who wants more context about the people emailing them without researching manually

31. Checker Plus

Quick Summary

Checker Plus lets you manage multiple Gmail accounts from a single Chrome toolbar dropdown. It adds desktop notifications, color-coded accounts, and inbox previews without opening Gmail.

Checker Plus is essential if you manage two or more Gmail accounts. It adds a toolbar icon that shows unread counts and lets you preview, read, and act on emails from all accounts in a single dropdown menu.

Desktop notifications are color-coded by account, so you instantly know which inbox received a new message. You can reply, archive, and delete emails directly from the notification or dropdown without ever opening a Gmail tab.

• Manage multiple Gmail accounts from a single Chrome toolbar dropdown
• Desktop notifications with color coding by account for instant identification
• Preview, read, and reply to emails without opening a Gmail tab
• Custom notification sounds and labels for different accounts and email types
• Free with optional donation for premium features

Who Should Choose Checker Plus

• Anyone managing two or more Gmail accounts (work, personal, business) who wants unified access
• Professionals who need desktop notifications for specific Gmail accounts without checking constantly
• Users who want to preview and act on emails from the toolbar without opening a full Gmail tab

32. FlowCrypt

Quick Summary

FlowCrypt adds PGP encryption to Gmail with a “Secure Compose” button. Recipients can read encrypted messages even if they don’t use Gmail, as long as they have your PGP key.

FlowCrypt (formerly CryptUp) adds a “Secure Compose” button alongside Gmail’s standard “Compose” button. Messages sent through Secure Compose are encrypted with PGP, ensuring only the intended recipient can read them.

The extension works across email providers. As long as your recipient has your PGP key, they can decrypt and read the message regardless of their email client.

• “Secure Compose” button adds one-click PGP encryption to Gmail’s interface
• End-to-end encryption that works with any email provider, not just Gmail
• Automatic key management that simplifies PGP setup for non-technical users
• Encrypt attachments alongside email content for full message protection
• Open-source code for transparency and security auditing

Who Should Choose FlowCrypt

• Professionals who send sensitive information via email and need encryption beyond Gmail’s default security
• Organizations in regulated industries (legal, healthcare, finance) that require PGP-encrypted communications
• Privacy-conscious users who want end-to-end encryption without switching away from Gmail

33. Rename Email

Quick Summary

Rename Email lets you change the subject lines of emails in your inbox. It’s a niche tool that solves the frustration of blank, vague, or unhelpful subject lines from other people.

Rename Email adds an edit button to your inbox that lets you rename any email’s subject line. The change is local to your account, so it doesn’t affect the sender’s or recipient’s view.

This is useful when colleagues send emails with blank or vague subjects. Renaming them makes your inbox easier to search and scan, especially when you’re looking for a specific conversation weeks later.

• Rename any email’s subject line in your inbox for better organization
• Changes are local to your account and don’t affect the sender’s view
• Makes searching and scanning your inbox faster by replacing vague subjects
• Add personal notes or priority markers to subject lines for quick identification
• Free Chrome extension with one-click installation

Who Should Choose Rename Email

• Anyone who frequently receives emails with blank, vague, or unhelpful subject lines
• Professionals who rely on inbox search and want subject lines that accurately describe each email
• Teams that want a simple way to tag and categorize emails by customizing subject text

34. HubSpot Sales

Quick Summary

HubSpot Sales adds email tracking, scheduling, CRM contact details, and a shared document library to Gmail. It’s a sales productivity tool that connects your inbox directly to HubSpot’s CRM.

HubSpot Sales (formerly Sidekick) gives you email tracking and scheduling inside Gmail. You get real-time notifications when prospects open your emails or click links, plus detailed contact information pulled from HubSpot’s CRM.

The shared document library lets your sales team store and access common sales collateral. Everyone on the team can share the same proposals, case studies, and presentations directly from Gmail.

• Real-time email tracking with notifications when prospects open or click
• Schedule emails to send at optimal times from Gmail’s compose window
• CRM sidebar showing contact details, deal status, and activity history from HubSpot
• Shared document library for team-wide access to sales collateral
• Email templates and sequences for automated follow-up workflows

Who Should Choose HubSpot Sales

• Sales teams already using HubSpot CRM who want their contact data integrated directly into Gmail
• Reps who need real-time email open and click tracking to prioritize follow-ups
• Teams that share sales documents and want a centralized library accessible from the inbox

35. Digify

Quick Summary

Digify lets you track, revoke, and set self-destruct timers on email attachments sent through Gmail. It gives you control over your files even after you hit send.

Digify offers three core features for attachment management. Track who opens your attachments and when. Revoke access to attachments after sending, useful when you need to update a quote or retract a file.

The self-destruct feature sets a time limit on attachment access. After the timer expires, the file becomes unviewable. This is valuable for sensitive documents like contracts, proposals, or financial reports.

• Track when recipients open your email attachments and how long they view them
• Revoke attachment access after sending to update or retract shared files
• Self-destruct timer makes attachments inaccessible after a set period
• Works directly from Gmail’s compose window with no extra steps
• Useful for contracts, proposals, and other time-sensitive documents

Who Should Choose Digify

• Sales teams that send proposals and want to know when prospects open them
• Professionals who share sensitive documents and need the ability to revoke access after sending
• Legal and finance teams that need time-limited access controls on email attachments

36. PixelBlock

Quick Summary

PixelBlock blocks email tracking pixels in your Gmail inbox and shows you which emails attempted to track you. It’s the privacy counterpart to tools like Mailtrack and HubSpot Sales.

PixelBlock prevents external tracking tools from detecting when you open an email. Many of the tools on this list (Mailtrack, HubSpot Sales, Gmelius) use tracking pixels to monitor opens. PixelBlock neutralizes those pixels.

You’ll also see a red eye icon on emails that attempted to track you. It’s a simple, free way to protect your email privacy without changing your reading habits.

• Blocks tracking pixels from tools like Mailtrack, HubSpot, and Yesware
• Red eye icon alerts you when an email attempted to track your opens
• Runs silently in the background with no configuration required
• Protects your privacy without affecting email functionality or appearance
• Free and open-source with no subscription or account needed

Who Should Choose PixelBlock

• Privacy-conscious users who don’t want senders knowing when they read their emails
• Professionals who want to respond on their own timeline without open-tracking pressure
• Anyone who values email privacy and wants a zero-effort tracking blocker

37. Dittach

Quick Summary

Dittach collects all email attachments you’ve sent and received in Gmail, then lets you sort, filter, and search them by file type. It’s ideal for finding lost attachments buried deep in your inbox.

Dittach automatically indexes every attachment in your Gmail account and organizes them into a searchable library. You can filter by file type (PDFs, images, spreadsheets, presentations) and sort by date, sender, or size.

You can also download, print, or open the original email associated with any attachment. Note that Dittach has been in beta for some time, so occasional bugs may occur.

• Indexes all Gmail attachments into a searchable, filterable library
• Filter by file type: PDFs, images, documents, spreadsheets, and more
• Search attachments by name, sender, or date for fast retrieval
• Open the original email associated with any attachment in one click
• Free Chrome extension, currently in beta

Who Should Choose Dittach

• Users who frequently need to find old email attachments and want faster search than Gmail’s built-in tools
• Professionals who work with many file types and want attachment organization by format
• Anyone who has lost track of an important attachment and wants a dedicated search tool

38. Inbox When Ready

Quick Summary

Inbox When Ready hides your Gmail inbox by default and limits how many times per day you can check it. It prevents compulsive email checking and protects your focus time.

Inbox When Ready hides your inbox when you open Gmail, removing the temptation to read new emails when you should be composing or working on other tasks.

You can set daily check limits for yourself. If you try to view your inbox more than your allotted number of times, the extension adds an extra step or warning. It’s a self-discipline tool for compulsive email checkers.

• Hides your inbox by default so you can compose and search without seeing new emails
• Set daily limits on how many times you can check your inbox
• Warning prompts appear when you exceed your self-imposed check limit
• Lock-out timer to enforce email-free focus periods
• Statistics on how often you check your inbox to track your progress

Who Should Choose Inbox When Ready

• Compulsive email checkers who want to break the habit of constantly refreshing their inbox
• Knowledge workers who need uninterrupted focus time but can’t resist checking Gmail
• Anyone implementing time-blocking or deep work strategies who needs a technical guardrail

39. Batch Reply

Quick Summary

Batch Reply lets you select multiple emails in Gmail and reply to all of them with the same message in a single action. It’s useful for sending identical updates to multiple people at once.

Batch Reply adds a simple but useful capability that Gmail doesn’t offer natively. Select multiple emails in your inbox, click reply, and send the same response to all of them at once.

This is useful when you need to send the same status update to different teams, or when multiple people email you about the same topic. It’s niche, but when you need it, it saves real time.

• Select multiple emails and reply to all of them with a single response
• Saves time when sending identical updates to multiple contacts
• Works with Gmail’s native checkbox selection system
• Free Chrome extension with no account required
• Best for batch communication scenarios like status updates or announcements

Who Should Choose Batch Reply

• Managers who receive similar questions from multiple team members and want to respond once
• Support teams that need to send the same update to multiple customers about an issue
• Anyone who periodically needs to reply to several emails with the same message

40. KeyRocket (Delisted)

Quick Summary

KeyRocket trained you to use Gmail keyboard shortcuts by showing real-time notifications when you performed an action that could have been done faster with a keystroke. It was delisted from the Chrome Web Store in September 2025.

KeyRocket watched how you used Gmail and displayed a subtle notification whenever a keyboard shortcut existed for the action you just performed. Over time, you’d internalize the shortcuts that saved you the most time. (For a full list, see our post on Gmail keyboard shortcuts.)

KeyRocket was delisted from the Chrome Web Store in September 2025 and is no longer available for new installations. If you want to learn Gmail shortcuts, Google’s built-in shortcut help (press “?” in Gmail) is the best remaining alternative.

• Real-time notifications when a keyboard shortcut could have replaced your mouse action
• Taught shortcuts organically through daily Gmail usage rather than memorization
• Covered composing, archiving, searching, labeling, and navigation shortcuts
• Status: Delisted. Removed from the Chrome Web Store in September 2025
• Alternative: Press “?” in Gmail to see all available keyboard shortcuts

Who Should Choose KeyRocket

• This tool is no longer available. Use Gmail’s built-in shortcut help (press “?” key) or see our keyboard shortcuts guide instead

41. Strikethrough, Etc.

Quick Summary

Strikethrough, Etc. adds text styling options like strikethrough, small caps, and upside-down text to any text field on the web, including Gmail’s compose window.

Strikethrough, Etc. is a text formatting extension that works across any website, not just Gmail. It adds options for strikethrough, small caps, upside-down text, and other styles that Gmail doesn’t support natively.

It’s a novelty tool with limited professional use. That said, strikethrough is useful for tracking changes in email drafts or marking completed items in a message thread.

• Adds strikethrough, small caps, upside-down text, and other styles to Gmail compose
• Works across any website and text field, not limited to Gmail
• Strikethrough is useful for tracking edits and marking completed items inline
• Free Chrome extension with no account required
• Best used sparingly in professional communication

Who Should Choose Strikethrough, Etc.

• Users who need strikethrough text for inline edits, change tracking, or task completion markers
• Teams that collaborate on email drafts and want visual change indicators
• Anyone who wants additional text formatting options beyond Gmail’s default toolbar

42. Mailtrack

Quick Summary

Mailtrack adds double-checkmark email tracking to Gmail, similar to WhatsApp’s read receipt system. One green check means sent, two green checks mean opened.

Mailtrack uses a simple visual system: one green checkmark when your email is sent, and a second green checkmark when the recipient opens it. You can also see exactly when the email was opened.

The main downside is that the free version appends a “Sent with Mailtrack” signature to every email. Paid plans remove this branding and add features like link tracking, daily reports, and campaign analytics.

• Double-checkmark system shows sent and opened status at a glance
• Timestamp tracking shows exactly when recipients open your emails
• Link click tracking on paid plans shows which links recipients clicked
• Daily and weekly email activity reports with open and click statistics
• Free tier available, but appends “Sent with Mailtrack” branding to outgoing emails

Who Should Choose Mailtrack

• Sales reps who want a simple, visual way to know when prospects open their emails
• Professionals who send time-sensitive emails and need to confirm they were read
• Users who want free email tracking and don’t mind the branding on outgoing messages

43. Actions for Gmail

Quick Summary

Actions for Gmail adds quick-action buttons (archive, delete, mark as read) to each email in your inbox list, so you can act on emails without opening them first.

Actions was originally essential because older Gmail versions didn’t offer inline action buttons. The current version of Gmail now shows archive, delete, and mark-as-read buttons when you hover over an email.

The extension is still useful if you prefer a slightly different interface or want additional action buttons beyond what Gmail provides by default. It’s also helpful if you’re using an older Gmail layout.

• Quick-action buttons on each email row for archive, delete, mark as read, and snooze
• Act on emails without opening them first for faster inbox processing
• Slightly different button layout than Gmail’s native hover actions
• Free and lightweight with minimal impact on Gmail’s load speed
• Most useful for users on older Gmail layouts or those who prefer always-visible buttons

Who Should Choose Actions for Gmail

• Users who process high volumes of email and want visible action buttons without hovering
• Anyone using an older Gmail layout that doesn’t include native inline action buttons
• Professionals who prefer always-visible quick actions over hover-triggered buttons

44. Dropbox for Gmail

Quick Summary

The Dropbox Chrome extension adds a Dropbox icon to Gmail’s compose window, letting you attach files from your Dropbox account as shareable links. It’s the Dropbox equivalent of Gmail’s built-in Google Drive integration.

If you use Dropbox instead of Google Drive, the Dropbox Chrome extension gives you the same in-compose file attachment experience. Click the Dropbox icon, browse your files, and attach them as shareable links.

This is especially useful for files larger than Gmail’s 25 MB attachment limit. Dropbox links work for any recipient regardless of whether they have a Dropbox account.

• Attach Dropbox files directly from Gmail’s compose window as shareable links
• Share files larger than Gmail’s 25 MB limit through Dropbox links
• Recipients can view files without a Dropbox account
• Browse your full Dropbox file structure from within the compose window
• Save Gmail attachments directly to your Dropbox account

Who Should Choose Dropbox for Gmail

• Teams and individuals who use Dropbox for cloud storage and share files frequently via email
• Anyone who needs to send files larger than Gmail’s 25 MB attachment limit
• Organizations that standardize on Dropbox rather than Google Drive for file management

45. Simple Gmail Notes

Quick Summary

Simple Gmail Notes adds sticky-note-style annotations to individual emails and threads. Notes appear directly on the email and in inbox summaries, making them more visible than Google Keep’s integration.

Simple Gmail Notes lets you attach notes to specific emails and see note previews in your inbox view. Unlike Google Keep, which stores notes in a separate sidebar, these notes are pinned directly to the email they reference.

Note extracts appear in the email summary row, so you can see your annotations without opening the email. This makes it easier to add context like “Follow up Monday” or “Waiting on approval” directly to the relevant message.

• Add sticky notes directly to individual emails and email threads
• Note extracts display in the inbox summary view for at-a-glance context
• Notes persist across sessions and sync via Google Drive or other storage
• Color-coded notes for visual categorization and priority marking
• Free and open-source with no account required

Who Should Choose Simple Gmail Notes

• Users who want email-attached notes that display in the inbox view, not in a separate sidebar
• Professionals who add context or action items to specific emails and want them immediately visible
• Anyone who prefers per-email annotations over the list-based approach of Google Keep or Tasks

46. Grammarly

Quick Summary

Grammarly checks your spelling, grammar, tone, and clarity in real time as you compose emails. It works across Gmail and any text field in Chrome.

Grammarly isn’t Gmail-specific, but it transforms email writing quality. As you type in Gmail’s compose window, Grammarly highlights spelling errors, grammar issues, unclear phrasing, and tone problems in real time.

The free version catches most spelling and grammar issues. Premium adds advanced suggestions for tone, clarity, conciseness, and inclusive language. It’s especially valuable for anyone sending client-facing or executive-level emails.

• Real-time spelling, grammar, and punctuation checking in Gmail’s compose window
• Tone detection that flags overly formal, casual, or unclear phrasing
• Clarity and conciseness suggestions to improve readability
• Works across Gmail and every text field in Chrome
• Free tier for basic grammar, with premium plans for advanced writing suggestions

Who Should Choose Grammarly

• Professionals who send client-facing emails and want to ensure polished, error-free writing
• Non-native English speakers who want real-time writing assistance in their emails
• Anyone who writes quickly and wants an automated safety net for typos and grammar mistakes

47. FollowUp.cc

Quick Summary

FollowUp.cc sets timed reminders on emails you’ve sent or received, automates follow-up messages for non-responders, and tracks email opens. It’s a simple follow-up system built into Gmail.

FollowUp.cc adds follow-up reminders to any email with a single click. Set a time interval, and the extension will remind you to follow up if you haven’t received a response.

You can also automate follow-ups that send automatically after a set period. Combine this with email open tracking to see whether recipients read your message before deciding on your follow-up approach.

• Set timed reminders on sent and received emails with one click
• Automate follow-up messages that send when recipients don’t respond
• Track email opens to see who read your message and when
• Recurring reminders for ongoing follow-up sequences
• Built-in contact management for basic prospect tracking

Who Should Choose FollowUp.cc

• Sales reps who need structured follow-up reminders to stay on top of prospect communication
• Busy professionals who frequently forget to follow up on important emails
• Anyone who wants automated follow-up sequences without a full CRM platform

48. Auto Text Expander

Quick Summary

Auto Text Expander lets you create keyboard shortcuts that expand into full phrases, sentences, or paragraphs. It saves time on repetitive typing in Gmail and across the web.

Auto Text Expander replaces short abbreviations with full text snippets as you type. Create shortcuts like “/thanks” that expand to “Thanks for reaching out, I’ll review this and get back to you by end of day.”

The time savings compound quickly when you send dozens of emails daily. It’s especially effective for customer service responses, sales outreach templates, and common meeting confirmations.

• Custom keyboard shortcuts that expand into full phrases, sentences, or paragraphs
• Works in Gmail’s compose window and across all Chrome text fields
• Unlimited snippets with support for rich text and HTML formatting
• Import and export snippet libraries for team sharing
• Free extension with a straightforward setup process

Who Should Choose Auto Text Expander

• Customer service reps who send similar responses repeatedly and want to speed up reply times
• Sales teams that use templated outreach and want faster message composition
• Anyone who types the same phrases daily and wants to eliminate repetitive keystrokes

49. ActiveInbox

Quick Summary

ActiveInbox converts your Gmail inbox into a task management system with due dates, project folders, follow-up reminders, and sub-tasks. It’s built for reaching inbox zero.

ActiveInbox transforms every email in your inbox into a manageable task. Set due dates, assign emails to project folders, create sub-tasks, and track which messages still need action.

The extension is designed around the “inbox zero” philosophy. Every email gets processed, categorized, and tracked to completion. You can also schedule emails and set follow-up reminders from within the Gmail interface.

• Convert emails into tasks with due dates, project folders, and sub-tasks
• Track emails to completion with status indicators and progress tracking
• Follow-up reminders that resurface emails when action is needed
• Schedule emails to send later directly from the compose window
• Free tier available with paid plans starting at $5.37/month for advanced features

Who Should Choose ActiveInbox

• Users pursuing inbox zero who want every email tracked through a structured completion workflow
• Professionals who use their inbox as their primary task list and want project-level organization
• Teams that manage work primarily through email and need task tracking without a separate PM tool

50. Discoverly

Quick Summary

Discoverly enriches your Gmail contacts with data from LinkedIn, Twitter, and Facebook. When you email someone, their social profiles and mutual connections appear in a sidebar widget.

Discoverly automatically pulls social media data for anyone you’re emailing in Gmail. You’ll see their LinkedIn profile, Twitter activity, Facebook information, and any mutual connections you share.

It’s especially valuable for sales, recruiting, and PR professionals who need quick background information on contacts before responding. The data appears in a sidebar, so you don’t need to search manually.

• Automatic LinkedIn, Twitter, and Facebook profile enrichment for Gmail contacts
• Displays mutual connections and shared networks alongside email threads
• Works automatically when you open an email from any contact
• Sidebar display that doesn’t interfere with Gmail’s core interface
• Free Chrome extension with no subscription required

Who Should Choose Discoverly

• Sales reps who want social media context on prospects before responding to their emails
• Recruiters who need LinkedIn and mutual connection data alongside candidate communication
• PR and business development professionals who build relationships through email outreach

51. Ginger

Quick Summary

Ginger is a grammar and spelling checker that also offers sentence rephrasing, translation, and a built-in dictionary. It’s a strong Grammarly alternative with real-time writing suggestions.

Ginger catches spelling and grammar mistakes in your emails and suggests alternative phrasings in real time. Beyond basic corrections, it offers synonyms, translations into 40+ languages, and a built-in dictionary.

The sentence rephrasing feature sets Ginger apart. It suggests multiple ways to rewrite a sentence, helping you sound more professional or adjust your tone for different audiences.

• Real-time spelling and grammar checking in Gmail and across Chrome
• Sentence rephrasing with multiple alternative versions for better clarity
• Translation support for 40+ languages directly in your browser
• Built-in dictionary and synonym suggestions for word choice improvement
• Free tier with premium plans for advanced rephrasing and writing features

Who Should Choose Ginger

• Multilingual professionals who need grammar checking and translation in a single tool
• Writers who want sentence rephrasing suggestions to improve tone and clarity
• Users looking for a Grammarly alternative with built-in translation and dictionary features

52. LinkedIn Sales Navigator

Quick Summary

LinkedIn Sales Navigator’s Gmail extension shows LinkedIn profile data, shared connections, and company information alongside your email threads. It’s a must-have for sales teams that prospect on LinkedIn.

LinkedIn Sales Navigator (formerly Rapportive) surfaces LinkedIn data for anyone you’re emailing. You’ll see their profile photo, job title, company, and shared connections in a sidebar widget, all without leaving Gmail.

Premium versions unlock advanced features like lead recommendations and InMail credits. For more details, see our comparison of LinkedIn Sales Navigator vs Premium and our complete guide to Sales Navigator.

• LinkedIn profile data (title, company, photo, shared connections) alongside Gmail threads
• Profile snippets appear when you hover over contacts in your inbox
• Lead recommendations and account insights on premium plans
• InMail integration for reaching prospects directly from Gmail
• Free basic features with premium plans starting at $99/month

Who Should Choose LinkedIn Sales Navigator

• B2B sales teams that prospect on LinkedIn and want contact data integrated into their Gmail workflow
• Recruiters who need LinkedIn profile context when communicating with candidates via email
• Business development professionals who want to see shared connections and company data in their inbox

53. Dropbox Sign (Formerly HelloSign)

Quick Summary

Dropbox Sign (formerly HelloSign) lets you fill out, sign, and send documents directly from Gmail. It handles PDFs, Google Docs, and other file types without requiring a separate application.

Dropbox Sign (rebranded from HelloSign after Dropbox’s 2019 acquisition) adds e-signature capability to Gmail. You can fill out documents, add your signature, and send them back without leaving your inbox.

The tool handles PDFs, Google Docs, and Word documents. It’s especially useful for sales teams processing contracts and legal teams handling agreements that arrive by email.

• Sign and fill out PDFs, Google Docs, and other documents directly from Gmail
• Send documents for signature to multiple recipients with tracking
• Template library for frequently used agreements and contracts
• Legally binding e-signatures compliant with ESIGN and UETA regulations
• Free plan available with limited monthly document signatures

Who Should Choose Dropbox Sign

• Sales teams that send and receive contracts through email and want to sign them without leaving Gmail
• Legal and HR teams that process signed documents regularly and need an efficient workflow
• Freelancers and small businesses that need occasional e-signatures without a full enterprise platform

54. Just Not Sorry

Quick Summary

Just Not Sorry highlights words and phrases in your emails that undermine your authority, like “I think,” “just,” “sorry,” and “I’m no expert.” It’s a confidence-building tool for professional communication.

Just Not Sorry underlines weak language in your email drafts and explains how each phrase reduces your assertiveness. Phrases like “I think,” “I’m no expert,” “just wanted to,” and “sorry to bother you” all get flagged.

It’s a subtle but powerful tool for anyone trying to communicate with more confidence. Hover over the underlined text to see why it’s flagged and decide whether to keep it or revise.

• Highlights qualifying and apologetic language that undermines your authority
• Hover explanations describe why each phrase is flagged and how it weakens your message
• Catches common hedging phrases like “I think,” “just,” “sorry,” and “I’m no expert”
• Runs in real time as you compose emails in Gmail
• Free Chrome extension with no account required

Who Should Choose Just Not Sorry

• Professionals who want to project more confidence and authority in their email communication
• Anyone who habitually uses qualifying language and wants to become aware of the pattern
• Teams coaching members on assertive professional communication

Gmail Apps and Extensions Comparison Table

This table compares all 54 tools by category, primary function, pricing, and current status. Use it to find the right tool for your specific workflow need.

Tool	Category	Primary Function	Free Plan	Status
Google Calendar	Built-In	Scheduling and calendar access	Yes	Active
Google Keep	Built-In	Note-taking and checklists	Yes	Active
Google Tasks	Built-In	Task management	Yes	Active
Google Drive	Built-In	File attachment and sharing	Yes (15 GB)	Active
Gmail Offline	Built-In	Offline email access	Yes	Active
EmailAnalytics	Third-Party App	Email activity tracking and analytics	Free trial	Active
Right Inbox	Third-Party App	Email scheduling and reminders	Limited free	Active
WiseStamp	Third-Party App	Email signature design	Free templates	Active
Virtru	Third-Party App	Email encryption and access control	Limited free	Active
BombBomb	Third-Party App	Video email recording and tracking	Free trial	Active
Unroll.me	Third-Party App	Subscription cleanup	Yes	Active
Todoist	Third-Party App	Task management from email	Yes	Active
Astro	Third-Party App	AI inbox management	N/A	Discontinued (2018)
Giphy	Third-Party App	GIF search and embedding	Yes	Active
Streak	Third-Party App	CRM inside Gmail	Yes	Active
Asana	Third-Party App	Project management integration	Yes	Active
Trello	Third-Party App	Kanban project management	Yes	Active
Smartsheet	Third-Party App	Spreadsheet-style project management	Free trial	Active
Wrike	Third-Party App	Team collaboration and PM	Yes	Active
Dialpad	Third-Party App	Cloud communications	Free trial	Active
Copper	Third-Party App	CRM for Google Workspace	Free trial	Active
Mailstrom	Third-Party App	Inbox cleanup and bulk management	Free trial	Active
SaneBox	Third-Party App	AI email filtering	Free trial	Active
Gmelius	Third-Party App	Shared inbox and collaboration	Free trial	Active
Sortd	Third-Party App	Kanban inbox organization	Yes	Active
Find Big Mail	Third-Party App	Storage cleanup	Yes	Active
BatchedInbox	Third-Party App	Batched email delivery	Yes	Active
The Email Game	Third-Party App	Gamified inbox processing	Yes	Active
Send From Gmail	Chrome Extension	Default mailto: handler	Yes	Active
Clearbit Connect	Chrome Extension	Contact enrichment and email lookup	Limited free	Active
Checker Plus	Chrome Extension	Multi-account inbox management	Yes	Active
FlowCrypt	Chrome Extension	PGP email encryption	Yes	Active
Rename Email	Chrome Extension	Subject line renaming	Yes	Active
HubSpot Sales	Chrome Extension	Email tracking and CRM integration	Yes	Active
Digify	Chrome Extension	Attachment tracking and control	Limited free	Active
PixelBlock	Chrome Extension	Email tracking blocker	Yes	Active
Dittach	Chrome Extension	Attachment search and management	Yes (Beta)	Active (Beta)
Inbox When Ready	Chrome Extension	Inbox hiding and check limits	Yes	Active
Batch Reply	Chrome Extension	Bulk email replies	Yes	Active
KeyRocket	Chrome Extension	Keyboard shortcut training	N/A	Delisted (2025)
Strikethrough, Etc.	Chrome Extension	Text formatting	Yes	Active
Mailtrack	Chrome Extension	Email open tracking	Yes (with branding)	Active
Actions for Gmail	Chrome Extension	Quick action buttons	Yes	Active
Dropbox for Gmail	Chrome Extension	Dropbox file attachment	Yes	Active
Simple Gmail Notes	Chrome Extension	Per-email note annotations	Yes	Active
Grammarly	Chrome Extension	Grammar and writing assistance	Yes	Active
FollowUp.cc	Chrome Extension	Follow-up reminders and tracking	Limited free	Active
Auto Text Expander	Chrome Extension	Text snippet expansion	Yes	Active
ActiveInbox	Chrome Extension	Email-to-task conversion	Limited free	Active
Discoverly	Chrome Extension	Social media contact enrichment	Yes	Active
Ginger	Chrome Extension	Grammar, rephrasing, and translation	Yes	Active
LinkedIn Sales Navigator	Chrome Extension	LinkedIn contact data in Gmail	Limited free	Active
Dropbox Sign	Chrome Extension	E-signatures in Gmail	Limited free	Active
Just Not Sorry	Chrome Extension	Weak language detection	Yes	Active

Tips to Get Started with Gmail Apps and Extensions

Adding too many tools at once creates more problems than it solves. Here’s how to get the most out of Gmail extensions without overwhelming your browser or your workflow.

Add one new tool at a time. Installing multiple extensions simultaneously makes it impossible to measure which ones actually help. Too many extensions also slow down Gmail’s load speed. Install one, use it for a week, then decide whether to keep it before adding another. For tips on optimizing Gmail speed, see our post on how to make Gmail faster.

Integrate within Gmail when possible. Many tools offer both standalone apps and Gmail sidebar add-ons. The sidebar version keeps you in a single window and reduces context-switching between tabs.

Don’t overlook Gmail’s built-in features. Gmail already offers snooze, labels, filters, categories, and advanced settings that cover many common needs. Before installing a third-party tool, check whether Gmail can already do what you need.

Experiment with similar tools. Several entries on this list solve the same problem in different ways. Try each variation to find the interface and workflow that fits you best.

Use tools consistently. Email has a massive impact on your productivity because you spend hours in it daily. A tool that saves three minutes per day adds up to over 12 hours per year, but only if you use it consistently.

Start Here: Implementation Checklist

5-Step Action Plan

1. Audit your current workflow. Track how you spend your email time for one week. Note the tasks that consume the most time: composing, searching, organizing, following up, or switching between apps.
2. Pick one problem to solve first. Choose the single biggest time waster from your audit. Match it to a tool from this list. For email analytics and response tracking, start with EmailAnalytics.
3. Install and learn the tool. Give yourself five business days to integrate the tool into your daily routine. Don’t judge a tool in the first hour. Most extensions need a few days of consistent use before they become automatic.
4. Measure the impact. After one week, compare your email time against your pre-tool baseline. If the tool saves you meaningful time, keep it. If it doesn’t, remove it and try an alternative.
5. Add one more tool and repeat. Once you’ve confirmed the first tool’s value, add a second tool for your next-biggest time waster. Repeat the measure-and-evaluate cycle.

For more Gmail optimization strategies, check out our guides on Gmail plugins, Gmail tips and tricks, and the best email management software tools.

The best Gmail app to start with is EmailAnalytics. It lets you measure your email habits first, then track the impact of every other tool you add. You’ll know exactly what’s working and what isn’t. Sign up for a 14-day free trial today.

Gmail Add-Ons FAQ

What are the best add-ons for Gmail?

The best Gmail add-ons depend on your goal. For email activity tracking, use EmailAnalytics. For CRM inside Gmail, Streak and Copper are strong choices.

For project management, Asana, Trello, and Wrike all offer Gmail add-ons. For email scheduling and follow-up reminders, Right Inbox and Gmelius are popular options. For email tracking, Mailtrack and HubSpot Sales are effective.

How do I add Gmail extensions to Chrome?

Open the Chrome Web Store at chrome.google.com/webstore and search for the extension you want. Click “Add to Chrome” to install it automatically.

Some extensions add an icon to your browser toolbar, while others integrate directly into Gmail’s interface. You may need to grant permissions for the extension to access your Gmail data before it activates.

Where are the add-ons in Gmail?

In Gmail, click the gear icon for Settings, then select “Get add-ons” to open the Google Workspace Marketplace. From there, you can browse or search for add-ons.

Installed add-ons appear as icons in Gmail’s right-hand panel. Click any icon to open that add-on’s sidebar inside your inbox.

What is the difference between a Gmail app, add-on, and extension?

A Gmail app is a standalone application that integrates with Gmail through an API. Examples include Todoist and Asana. A Gmail add-on installs through the Google Workspace Marketplace and appears in Gmail’s right-hand sidebar.

A Gmail extension is a Chrome browser plugin that modifies Gmail’s web interface. Many tools offer multiple versions: a standalone app, a Workspace add-on, and a Chrome extension.

Are Gmail extensions safe to use?

Most reputable Gmail extensions are safe, but they do require access to your email data. Before installing, check the developer’s reputation, read user reviews, and review the permissions requested.

Stick to extensions with large user bases and regular updates. Avoid granting “read and change all your data on all websites” permissions unless the tool genuinely needs it for its core functionality.

Can I use too many Gmail extensions at once?

Yes. Too many extensions slow down your browser, increase Gmail’s load time, and create potential conflicts. We recommend running 3 to 5 carefully chosen extensions rather than a dozen overlapping tools.

Install one at a time, test for a week, and remove any that don’t deliver clear value. Fewer, well-chosen tools outperform a cluttered toolbar every time.

Do Gmail add-ons work on mobile?

Some Gmail add-ons work in the Gmail mobile app on Android and iOS, but Chrome extensions don’t transfer to mobile. Add-ons installed through the Google Workspace Marketplace are more likely to have mobile support.

Standalone apps like Todoist, Asana, and Trello have their own mobile apps that sync with their Gmail integrations. Check each tool’s documentation for specific mobile compatibility details.