Thunderbird 146 open-source email client introduces a new OpenPGP keyserver setting and delivers a range of fixes improving stability, usability, and security.

Mozilla has released Thunderbird version 146 of its widely adopted free and open-source desktop email client, now available for download.

On the new features side, the update introduces UI-based configuration of a preferred OpenPGP keyserver, giving users clearer control over where their public keys are fetched and published. Alongside this, Thunderbird migrates all existing logins to modern AES-based cryptography, improving security without requiring user action.