Desktop Roadmap
Thunderbird for Windows, macOS, and Linux. Follow the roadmap from active work to future ideas. Timelines may shift as we learn and iterate.
Last updated March 10, 2026
Active
- Exchange (EWS, GraphAPI) Finalize the work on the Exchange protocol in order to support all versions of Exchange and Microsoft 365, including calendar and address book support.
- Global Database Continue the work on the new Panorama database, allowing users to start testing the new database, and handle a consistent data migration.
- Improve and extend existing add-ons APIs Improve the currently available APIs, focus on giving access to new sections and core features, as well as introducing new APIs for specific sections.
Planned
- First Time User Experience Complete Account Hub for all account creations, enable it for first time users, and show a customization wizard after first account creation.
- Calendar Dialogs UI/UX Complete the refresh of the calendar interface and user experience. Some protocols handling changes might be needed.
- Settings Interface Improvements Clean up and reorganize the settings into more discoverable sections and improve its search.
- Encryption and Security Improvements Improve the support and discovery of OpenPGP and S/MIME, improve email tracking protection, and harden phishing email prevention.
Shipped
- Exchange Email Support Full support of email operations and account creation. November 2025
- Native OS Notifications Add quick actions to reply, delete, mark messages as read/unread, and manage the notifications. July 2025
- Implement Glean Telemetry Move away from the old telemetry implementation and add the new Glean Telemetry. April 2025
- In-App Notifications Implement a new notification system that allows the Thunderbird team to push important, time-sensitive information directly to a user's Thunderbird desktop client. May 2025