[ { "id": 61, "name": "Glider", "slug": "glider", "former_names": [], "small_logo_thumb_url": "/company/thumb/missing.png", "website": "http://glider.io", "all_locations": "Portland, OR, USA", "long_description": "Glider brings clarity and workflow to the deal process. From large, publicly traded companies to small, growing businesses, Glider is helping industry leaders maintain focus on their businesses rather than babysitting contracts. The company is based in beautiful Portland, Oregon, and is backed by True Ventures, TechStars, and a handful of first-class angel investors.", "one_liner": "We filter distracting emails away from your inbox.", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Productivity", "launched_at": 1322046064, "tags": [ "Productivity", "Email" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2012", "status": "Inactive", "industries": [ "B2B", "Productivity" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/glider", "api": "https://yc-oss.github.io/api/batches/winter-2012/glider.json" }, { "id": 95, "name": "Zenbox", "slug": "zenbox", "former_names": [], "small_logo_thumb_url": "/company/thumb/missing.png", "website": "http://zenboxapp.com", "all_locations": "San Francisco, CA, USA", "long_description": "Zenbox is a browser extension that connects all of your SaaS services.Open an email, and Zenbox pulls in your customer information from dozens of services right into the sidebar.", "one_liner": "Brings dozens of SaaS's (Mailchimp, Stripe, Shopify, Salesforce,…", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Productivity", "launched_at": 1326789268, "tags": [ "SaaS", "Productivity", "Email" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2011", "status": "Inactive", "industries": [ "B2B", "Productivity" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/zenbox", "api": "https://yc-oss.github.io/api/batches/summer-2011/zenbox.json" }, { "id": 162, "name": "Mailgun", "slug": "mailgun", "former_names": [], "small_logo_thumb_url": "/company/thumb/missing.png", "website": "http://mailgun.net", "all_locations": "San Francisco, CA, USA", "long_description": "Mailgun is a developer-focused email delivery platform that empowers companies to send, receive, and track transactional and marketing emails through an API. \n\nFounded in 2010, Mailgun became a Y-Combinator success story later acquired by Rackspace. In February 2017, Mailgun spun back out as a standalone business focused on building best-in-class email deliverability solutions. We are headquartered in San Antonio with remote teams in San Francisco and Austin. Customers like Slack, Lyft, Github, and Reddit rely on Mailgun to deliver email to their customers.", "one_liner": "Email API service.", "team_size": 51, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1326789941, "tags": [ "API", "Email" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2011", "status": "Acquired", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/mailgun", "api": "https://yc-oss.github.io/api/batches/winter-2011/mailgun.json" }, { "id": 180, "name": "Rapportive", "slug": "rapportive", "former_names": [], "small_logo_thumb_url": "/company/thumb/missing.png", "website": "http://rapportive.com", "all_locations": "San Francisco, CA, USA", "long_description": "Rapportive shows you everything about your contacts right inside your inbox. \n\nYou can immediately see what people look like, where they're based, and what they do. You can establish rapport by mentioning shared interests. You can grow your network by connecting on LinkedIn.\n\nImagine relationship management built into your email. For free.", "one_liner": "Add profiles to email.", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Productivity", "launched_at": 1326790086, "tags": [ "Productivity", "Email" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2010", "status": "Acquired", "industries": [ "B2B", "Productivity" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/rapportive", "api": "https://yc-oss.github.io/api/batches/summer-2010/rapportive.json" }, { "id": 199, "name": "Post.fm", "slug": "post-fm", "former_names": [ "Unipost" ], "small_logo_thumb_url": "/company/thumb/missing.png", "website": "http://post.fm", "all_locations": "London, England, United Kingdom; Remote", "long_description": "", "one_liner": "New email inbox.", "team_size": 0, "industry": "B2B", "subindustry": "B2B -> Productivity", "launched_at": 1326790231, "tags": [ "Email" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2010", "status": "Inactive", "industries": [ "B2B", "Productivity" ], "regions": [ "United Kingdom", "Europe", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/post-fm", "api": "https://yc-oss.github.io/api/batches/summer-2010/post-fm.json" }, { "id": 273, "name": "reMail", "slug": "remail", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/001be90befc6cb6633d3b3314009fabd489e5691.png", "website": "http://remail.com", "all_locations": "CA, USA", "long_description": "ReMail is an email app that downloads all your email to your iPhone and offers a comprehensive email search.", "one_liner": "Email search for iPhone. Acquired by Google in Feb 2010.", "team_size": 1, "industry": "B2B", "subindustry": "B2B -> Productivity", "launched_at": 1326790872, "tags": [ "Email" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2009", "status": "Acquired", "industries": [ "B2B", "Productivity" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/remail", "api": "https://yc-oss.github.io/api/batches/winter-2009/remail.json" }, { "id": 281, "name": "Posterous", "slug": "posterous", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/5bc0011671097bf05400aa3d979a22a7452d3867.png", "website": "http://posterous.com", "all_locations": "San Francisco, CA, USA", "long_description": "Posterous emerged from Y Combinator in the summer of 2008 as an innovative company focused on making blogging simple - as simple as sending an email - and now has more than 15 million monthly users.\r\n\r\nWith the launch of Posterous Spaces, the company is bringing its trademark simplicity to help people share smarter with intuitive privacy controls to share selectively across multiple platforms.", "one_liner": "Dead simple blogs by email", "team_size": 11, "industry": "Consumer", "subindustry": "Consumer -> Social", "launched_at": 1326790935, "tags": [ "Email" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2008", "status": "Acquired", "industries": [ "Consumer", "Social" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/posterous", "api": "https://yc-oss.github.io/api/batches/summer-2008/posterous.json" }, { "id": 390, "name": "ZeroMailer", "slug": "zeromailer", "former_names": [ "QuicklyChat" ], "small_logo_thumb_url": "/company/thumb/missing.png", "website": "http://zeromailer.com", "all_locations": "", "long_description": null, "one_liner": "Easy mailing lists", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Productivity", "launched_at": 1336096517, "tags": [ "Email" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2012", "status": "Acquired", "industries": [ "B2B", "Productivity" ], "regions": [ "Unspecified" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/zeromailer", "api": "https://yc-oss.github.io/api/batches/summer-2012/zeromailer.json" }, { "id": 589, "name": "Threadable", "slug": "threadable", "former_names": [], "small_logo_thumb_url": "/company/thumb/missing.png", "website": "http://threadable.com", "all_locations": "San Francisco, CA, USA", "long_description": "Threadable is a mailing list management solution that makes group email less noisy and more actionable.", "one_liner": "Mailing lists 2.0. \r\nThreadable makes group email less noisy and more…", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Productivity", "launched_at": 1384978697, "tags": [ "Messaging", "Email" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2014", "status": "Inactive", "industries": [ "B2B", "Productivity" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/threadable", "api": "https://yc-oss.github.io/api/batches/winter-2014/threadable.json" }, { "id": 714, "name": "Hive", "slug": "hive", "former_names": [ "TicketLabs" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/73d61e1d2cf23166fc40148ac368fe95c3fb3ed1.png", "website": "http://www.hive.co", "all_locations": "Kitchener, ON, Canada; Remote", "long_description": "Hive is the industry-best marketing platform for event marketers. Our platform powers marketing for 1500+ of the most iconic event, festivals, venues, promoters, and event-centric brands across North America.\r\n\r\nWe help our clients sell out their shows and make their events unforgettable - by helping them grow their customer base and personalizing and automating their email, SMS, and ad campaigns.\r\n\r\nHive integrates with 25+ partners like Ticketmaster and Shopify, ingesting rich customer data in real-time. With this data, event marketers can segment their audiences in powerful ways and send timely, customized messages to their customers. ", "one_liner": "Marketing automation for event promoters (email, sms, ads, CRM)", "team_size": 65, "industry": "B2B", "subindustry": "B2B -> Marketing", "launched_at": 1398908070, "tags": [ "SaaS", "CRM", "SMS", "Email" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Summer 2014", "status": "Active", "industries": [ "B2B", "Marketing" ], "regions": [ "Canada", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/hive", "api": "https://yc-oss.github.io/api/batches/summer-2014/hive.json" }, { "id": 1028, "name": "MailTime", "slug": "mailtime", "former_names": [ "MailTime", "Measurable AI (MailTime)" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/72dc9ccfe26e8c21c74a8e2ae9b64027c599c994.png", "website": "http://mailtime.com", "all_locations": "Hong Kong, Hong Kong", "long_description": "MailTime Email Messenger: Mobile email client that makes emails as quick and easy as texting.\r\n\r\nMailTime AI: Draft and proofread emails using generative AI.", "one_liner": "Emails as quick and easy as text messaging.", "team_size": 18, "industry": "B2B", "subindustry": "B2B -> Productivity", "launched_at": 1447452315, "tags": [ "Productivity", "Consumer Products", "Email" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Winter 2016", "status": "Active", "industries": [ "B2B", "Productivity" ], "regions": [ "Hong Kong", "East Asia" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/mailtime", "api": "https://yc-oss.github.io/api/batches/winter-2016/mailtime.json" }, { "id": 1289, "name": "Polymail", "slug": "polymail", "former_names": [], "small_logo_thumb_url": "/company/thumb/missing.png", "website": "https://polymail.io", "all_locations": "Marina del Rey, CA, USA", "long_description": "Polymail is an email platform for sales communication. Our platform - which includes email tracking, Salesforce sync, and calendar scheduling - empowers sales teams to increase conversion and shorten sales cycles while providing executives with transparency into sales activity.\n\nBacked by Y Combinator and based in Los Angeles, Polymail has helped thousands of customers transform their sales communication processes. For more information visit http://polymail.io", "one_liner": "Email productivity platform for business.", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Productivity", "launched_at": 1461817213, "tags": [ "Productivity", "Email" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2016", "status": "Acquired", "industries": [ "B2B", "Productivity" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/polymail", "api": "https://yc-oss.github.io/api/batches/summer-2016/polymail.json" }, { "id": 1637, "name": "Slik", "slug": "slik", "former_names": [ "Slik", "Medici Banking" ], "small_logo_thumb_url": "/company/thumb/missing.png", "website": "http://slik.ai", "all_locations": "San Francisco, CA, USA", "long_description": "Slik automates lead generation and prospecting for sales teams.", "one_liner": "Slik enables the long tail to use email outreach. ", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Sales", "launched_at": 1493658016, "tags": [ "Marketing", "Email" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2017", "status": "Inactive", "industries": [ "B2B", "Sales" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/slik", "api": "https://yc-oss.github.io/api/batches/summer-2017/slik.json" }, { "id": 22021, "name": "Mailwarm", "slug": "mailwarm", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/28e9d8c1afc2f855ecd63f4a8547074fb4563efd.png", "website": "https://www.mailwarm.com", "all_locations": "Paris, Île-de-France, France", "long_description": "Mailwarm is the email deliverability company. We help senders get into the inbox and stay there, through products, tools, and services built for both humans and AI agents.\r\n\r\n✦ Mailwarm.com: The original email warmup tool. Build sender reputation automatically through real, positive inbox interactions across a large network of mailboxes, with built-in monitoring and deliverability insights.\r\n\r\n✦ ThemailX.com: Instant deliverability diagnostics for AI agents and humans. Check all protocols SPF, DKIM, DMARC, Inbox placement and more via MCP, API, or web. Get specific fixes and actions, not just scores.\r\n\r\n✦ Mailadept.com: Email deliverability on autopilot. A subscription-based, AI-native service where agents and deliverability experts collaborate to audit your setup, fix issues, and monitor inbox placement continuously.\r\n\r\nBuild reputation with Mailwarm, diagnose problems with themailX, fix and maintain with mailadept.\r\nDoing email marketing or cold outreach? Book a call through mailadept.com, we'll show you which one fits.", "one_liner": "Prevents your emails from landing in spam.", "team_size": 10, "industry": "B2B", "subindustry": "B2B -> Sales", "launched_at": 1599762606, "tags": [ "SaaS", "B2B", "Marketing", "Email" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2020", "status": "Active", "industries": [ "B2B", "Sales" ], "regions": [ "France", "Europe", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/mailwarm", "api": "https://yc-oss.github.io/api/batches/summer-2020/mailwarm.json" }, { "id": 22665, "name": "Waypoint", "slug": "waypoint", "former_names": [ "Metaccountant", "Marketbase" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/6bbc4ee18717a8743a3b77c32098b2eeafb4fe72.png", "website": "https://www.usewaypoint.com", "all_locations": "United States; Remote", "long_description": "Waypoint combines a modern email API with a visual template builder so teams can ship faster.\r\n\r\nAlternative to SendGrid, MailGun, or Postmark.", "one_liner": "The email API built for product teams", "team_size": null, "industry": "B2B", "subindustry": "B2B", "launched_at": 1620188785, "tags": [ "SaaS", "B2B", "Design", "Email", "APIs" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2021", "status": "Active", "industries": [ "B2B" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/waypoint", "api": "https://yc-oss.github.io/api/batches/winter-2021/waypoint.json" }, { "id": 23200, "name": "Compose.ai", "slug": "compose-ai", "former_names": [ "Compose" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/0b515e27253a5c01c3ecd7e702852c67956b341d.png", "website": "https://compose.ai", "all_locations": "San Francisco, CA, USA; Remote", "long_description": "Compose AI is a free Chrome extension that helps automate your writing using AI. You know how Gmail autocompletes your emails? Compose.ai is like that but everywhere, like how Grammarly works.", "one_liner": "Cut your writing time by 40% with AI-powered autocomplete", "team_size": 7, "industry": "B2B", "subindustry": "B2B -> Productivity", "launched_at": 1614725087, "tags": [ "Artificial Intelligence", "NLP", "Email" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Winter 2021", "status": "Active", "industries": [ "B2B", "Productivity" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/compose-ai", "api": "https://yc-oss.github.io/api/batches/winter-2021/compose-ai.json" }, { "id": 24408, "name": "Forage Mail", "slug": "forage-mail", "former_names": [ "Clarity", "Forage" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/5dfe444e94f2a9695e6a03a3323c5bdcc0068d24.png", "website": "https://foragemail.com", "all_locations": "New York, NY, USA; Remote", "long_description": "Forage filters low-priority emails from your Gmail. It sends you a clean, daily summary of the emails it filtered out, including a TLDR for every newsletter. It learns your preferences and gives you full control with custom rules. Works with any email app.", "one_liner": "AI that solves email overwhelm. Not another mail app.", "team_size": 4, "industry": "Consumer", "subindustry": "Consumer", "launched_at": 1630040488, "tags": [ "Consumer", "Productivity", "Email", "AI", "AI Assistant" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2021", "status": "Inactive", "industries": [ "Consumer" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/forage-mail", "api": "https://yc-oss.github.io/api/batches/summer-2021/forage-mail.json" }, { "id": 25340, "name": "Loops", "slug": "loops", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/ef8d8c9b30ba22bdd91401d412f32c73551f5439.png", "website": "https://loops.so", "all_locations": "Washington, DC, USA; New York, NY, USA; Remote", "long_description": "Loops is a simple and beautiful email sending platform for SaaS companies. We have a Notion-style block editor for email creation, excellent deliverability for transactional mail and pre-built loops for SaaS companies to snap-in to increase their revenue and user engagement.", "one_liner": "Email sending for startups", "team_size": 9, "industry": "B2B", "subindustry": "B2B -> Marketing", "launched_at": 1643293654, "tags": [ "Email" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2022", "status": "Active", "industries": [ "B2B", "Marketing" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/loops", "api": "https://yc-oss.github.io/api/batches/winter-2022/loops.json" }, { "id": 25557, "name": "Lightmeter", "slug": "lightmeter", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/05ac865cc7ed77b61fdd6a554d5dacf0675f39eb.png", "website": "https://lightmeter.io", "all_locations": "London, England, United Kingdom", "long_description": "Lightmeter is turn-key email outreach infrastructure for startups, combining network, platform, and expert advice. It integrates with sales tools like Apollo, replacing Google and Microsoft for email delivery. No change in tooling or workflow required. Lightmeter gets mail into inboxes, scalably and sustainably, while transparently reporting on performance. Plans from 50 to 7,500 outreach emails per day.", "one_liner": "Managed Sales Email Delivery For Cold Outreach", "team_size": 5, "industry": "B2B", "subindustry": "B2B -> Sales", "launched_at": 1647745718, "tags": [ "Delivery", "Sales", "Email" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2022", "status": "Active", "industries": [ "B2B", "Sales" ], "regions": [ "United Kingdom", "Europe", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/lightmeter", "api": "https://yc-oss.github.io/api/batches/winter-2022/lightmeter.json" }, { "id": 29323, "name": "Zaymo", "slug": "zaymo", "former_names": [ "Zaymo Inc." ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/b5f257204d98f9d544a5265e0aac1efeeae4f1f3.png", "website": "https://zaymo.com", "all_locations": "Lehi, UT, USA", "long_description": "Recent changes in email clients made it possible to embed a whole website inside an email. We've built the first email builder that lets Shopify brands create emails that are fully interactive like websites. \r\n\r\nZaymo emails decrease friction and increase conversion for product marketing and data collection.\r\n", "one_liner": "Interactive email builder for ecommerce brands", "team_size": 13, "industry": "B2B", "subindustry": "B2B -> Marketing", "launched_at": 1701370559, "tags": [ "E-commerce", "Marketing", "Email" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Winter 2024", "status": "Active", "industries": [ "B2B", "Marketing" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": true, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/zaymo", "api": "https://yc-oss.github.io/api/batches/winter-2024/zaymo.json" }, { "id": 29668, "name": "Proxis", "slug": "proxis", "former_names": [ "CureAI", "Tailwind Health" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/451285ce2b3407f2b83c947851ea72847724516e.png", "website": "https://www.proxis.ai/", "all_locations": "San Francisco, CA, USA", "long_description": "Proxis is the AI automation platform built for enterprises.\r\n\r\nProxis is creating AI email agents that empower brands and enterprise teams to close deals automatically. Think: your inbox, on autopilot.\r\n\r\nWe initially fine tuned and distilled LLMs for enterprise use—and quickly realized that companies need more than just smarter models. They need full-stack automation. So Proxis built AI agents that handle the tedious, time-consuming work—everything from autonomous sales closers to customer service agents.\r\n\r\nThe mission is bold: to build the world’s most capable team of AI agents for every enterprise. Proxis imagines a future where a single founder can run a billion-dollar company—backed by a custom-built army of agents. Proxis is rethinking how agents are built, trained, and deployed from the ground up.", "one_liner": "The platform for enterprise AI agent automations, starting with email.", "team_size": 3, "industry": "B2B", "subindustry": "B2B", "launched_at": 1725054386, "tags": [ "SaaS", "B2B", "Productivity", "Email", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2024", "status": "Active", "industries": [ "B2B" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/proxis", "api": "https://yc-oss.github.io/api/batches/summer-2024/proxis.json" }, { "id": 29670, "name": "Zuni", "slug": "zuni", "former_names": [ "Letterhead", "Solarflare" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/7a33b212287f4a8ba926edd565f2b9dfec82369e.png", "website": "https://zuni.app", "all_locations": "London, United Kingdom; Remote", "long_description": "Zuni is a Chrome extension that gives you AI capabilities in the sidebar of your browser. It can use what it sees on any of your tabs as context, and proactively helps you draft messages and emails.", "one_liner": "AI Assistant that works alongside you in your Chrome browser", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Productivity", "launched_at": 1721689611, "tags": [ "Generative AI", "Productivity", "Email", "AI Assistant" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2024", "status": "Active", "industries": [ "B2B", "Productivity" ], "regions": [ "United Kingdom", "Europe", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/zuni", "api": "https://yc-oss.github.io/api/batches/summer-2024/zuni.json" }, { "id": 29795, "name": "Odo", "slug": "odo", "former_names": [ "Odo", "Odo Labs" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/1708fa08344b75fc38d36f9effcf823a2fb93846.png", "website": "https://useodo.com/", "all_locations": "San Francisco, CA, USA", "long_description": "Odo is your email assistant because you deserve a better morning. Odo can help you organize, draft emails, and follow-up effortlessly after meetings.", "one_liner": "Your email assistant because you deserve a better morning", "team_size": 2, "industry": "B2B", "subindustry": "B2B", "launched_at": 1717022864, "tags": [ "SaaS", "Productivity", "Email", "AI", "AI Assistant" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2024", "status": "Active", "industries": [ "B2B" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/odo", "api": "https://yc-oss.github.io/api/batches/summer-2024/odo.json" }, { "id": 30116, "name": "Freestyle", "slug": "freestyle-ai", "former_names": [ "Jarvis Mail", "Friday" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/5f9e9b4d414566a4e2636d95776ad36cc0bd894c.png", "website": "https://www.freestyle.ai", "all_locations": "San Francisco, CA, USA", "long_description": "Email sucks. It takes forever to go through, and hiring an assistant is costly and invasive. Friday is building the assistant that learns how to predict the action that you will take on your emails, and does it for you.\r\n\r\nToday's email products try to help you go through your emails a little faster, but if you have to get through 1000 emails, those products doesn't do much for you. \r\n\r\nThe reality is, most of the emails you get don't require you to personally look at them. Freestyle completely eliminates the need to check those emails, and handles them all at once for you, immediately. \r\n\r\nFreestyle is here to file away spam, sift through newsletters for important tidbits, text you important notifications, and reply to mundane emails, so that no matter how many thousands of emails are in your inbox, you'll just be left with the few emails that actually require your personal touch.\r\n\r\nGetting this right is difficult, so everyone else settles with trying to help you go through your email twice as fast. If you want to go 100x as fast, you shouldn't spend even a second on useless emails. \r\n\r\nFreestyle gets this right, bringing the elite experience of having a professional assistant to the entire world.", "one_liner": "The AI Assistant for Gmail", "team_size": 3, "industry": "Consumer", "subindustry": "Consumer", "launched_at": 1731106672, "tags": [ "Artificial Intelligence", "Productivity", "Email", "AI Assistant" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Fall 2024", "status": "Active", "industries": [ "Consumer" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": true, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/freestyle-ai", "api": "https://yc-oss.github.io/api/batches/fall-2024/freestyle-ai.json" }, { "id": 30343, "name": "Cedar", "slug": "cedar", "former_names": [ "ByteBelli", "lawyai (name in progress)", "GraphIQal" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/8d689d59276a36e33100281dbe98a74bcaf59a06.png", "website": "https://mail.cedarcopilot.com/", "all_locations": "San Francisco, CA, USA", "long_description": "Cedar helps the fastest growing GTM teams ramp up new reps faster & spread top rep playbook throughout the team. AE's at Cursor, Corgi, Pylon, and Warp use Cedar to save 75% of admin time on CRM updates, follow-ups, and deal strategy. \r\n\r\nBacked by YC with an ex-Figma, Notion, and Intuit team, Cedar was built by spending hundreds of hours with the best AE's in industry – we've built a playbook for the fastest growing teams and founders ramping up sales, and we'll use it to automate the busy work so you can sell more, better.", "one_liner": "Execute the best sales playbook in industry", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1739293549, "tags": [ "Sales", "Sales Enablement", "CRM", "Email" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2025", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": true, "url": "https://www.ycombinator.com/companies/cedar", "api": "https://yc-oss.github.io/api/batches/winter-2025/cedar.json" }, { "id": 30611, "name": "AgentMail", "slug": "agentmail", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/5c18d385fb2e41299574abf5d25f5ba98485d781.png", "website": "https://agentmail.to", "all_locations": "San Francisco, CA, USA", "long_description": "AgentMail is the email inbox API for AI agents. It gives agents their own email inboxes, like Gmail does for humans.", "one_liner": "Email Inboxes for AI Agents", "team_size": 10, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1750990316, "tags": [ "Developer Tools", "API", "Email" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Summer 2025", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/agentmail", "api": "https://yc-oss.github.io/api/batches/summer-2025/agentmail.json" }, { "id": 31263, "name": "Supafax", "slug": "supafax", "former_names": [ "Veriad" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/3aad57490dc6ff8ef9e68566a4fbc4d7e6e484b8.png", "website": "https://supafax.com", "all_locations": "San Francisco, CA, USA", "long_description": "Supafax is an AI agent that lives in your inbox and proactively manages your email and calendar. ", "one_liner": "AI assistant for your email and calendar", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Productivity", "launched_at": 1767420715, "tags": [ "B2B", "Productivity", "Calendar", "Email", "AI Assistant" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2026", "status": "Active", "industries": [ "B2B", "Productivity" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/supafax", "api": "https://yc-oss.github.io/api/batches/winter-2026/supafax.json" } ]