Is your feature request related to a problem?

Project follow-up is difficult because contributors don’t always notice they’ve been referenced inside a page.
Today:

• Only comments handle @mention email notifications (see Send a notification email on comments #1140).
• Users can’t subscribe automatically when a page is created ([Feature Request] Subscribe to changes to page. #645 addresses manual subscribe only).

Describe the solution you'd like

1. Inline @mentions in documents

   • Typing @username in the page editor triggers:
     • Autocomplete on workspace users.
     • Automatic email notification to the mentioned user (respecting each user’s notification settings).
     • Optional in-app notification in the sidebar/bell.

2. Default subscribers on page creation

   • “Add collaborators” multi-select when creating a page.
   • Selected users become subscribers and receive all subsequent notifications (comments, edits, mentions).

3. “Notify subscribers” action

   • A button in the toolbar/history allowing the editor to send an immediate email (and/or webhook) summarising the latest change set to:
     • All page subscribers.
     • All users mentioned with @ anywhere in the page.

Describe alternatives you’ve considered

• Manual email/Slack/Teams ping after each edit.
• Relying on [Feature Request] Subscribe to changes to page. #645 subscriptions + Send a notification email on comments #1140 comment-mentions (still misses inline mention + one-click notify).

Additional context

This would bring Docmost closer to Confluence/Notion collaborative workflows and keep stakeholders in the loop without leaving the editor.

Related issues

• Send a notification email on comments #1140
• [Feature Request] Subscribe to changes to page. #645
• [FR] Todo lists #629