Of course, this won’t work if you have Thunderbird installed from the software repositories of your GNU/Linux distribution, but only if you’re using Mozilla Thunderbird via the binary archive downloaded from the official website. You will now see the option to upgrade to Thunderbird 91.2.0. Therefore, if you’re running Thunderbird 78.14, all you have to do to upgrade to Thunderbird 91.2 is to click the hamburger menu next to the search field on the toolbar and access the About Thunderbird dialog from the Help menu. But the major change in this release is the ability to upgrade from Thunderbird 78 and earlier versions without from within the app. eml file format, as well as a bunch of bug fixes. Thunderbird 91.2 is also a minor update, bringing only the ability to use a unique filename when saving a single message in the. After three minor point releases, Thunderbird 91.2 is here and enables support for OTA upgrades from earlier Thunderbird versions. Thunderbird 91 was launched two months ago, but it wasn’t offered as an OTA (Over-the-Air) upgrade from Thunderbird 78 and earlier releases.

The Thunderbird 91.2 open-source, free and cross-platform email, news, calendar, and chat client from Mozilla has been released earlier this week as the second major point release in the Thunderbird 91 series.

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