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.
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. After three minor point releases,…