Beyond the Firefox browser to see more changes under its new CEO, the Thunderbird mail client is also expected to see some big changes in the new year.
Thunderbid today published their 2025 year in review while also offering a look ahead to 2026.
This year brought Thunderbird 140 as their newest Extended Support Release (ESR), native Microsoft Exchange email support in Thunderbird 145, continued work on their mobile story, and also the introduction of Thundermail and Thunderbird Pro.
For 2026 they are working on updating their aging database solution used by the mail client, expanding their Microsoft Exchange support, expanding their protocol support, and refreshing the Thunderbird Calendar user interface.
More details on the Thunderbird 2025 accomplishments and early planning for 2026 can be found via the Thunderbird Blog.
