Mozilla Thunderbird Will Support Microsoft Exchange

One more significant feature is now in the works: connecting to Microsoft Exchange servers.

Weve already done some exploratory work, and have enabled the usage of Rust in Thunderbird.

Its officially on our roadmap!"

The discussion thread reveals at least one catch, though.

Microsoft 365 accounts)starting on October 1st, 2026.

There’s no estimated release date right now for Exchange support in Thunderbird.

Source:Thunderbird Blog,Bugzilla