Support for Enigmail on Thunderbird 68 and older will end on October 1, 2021.
The Thunderbird team has announced today the availability of Thunderbird 91.This is the second major version of Thunderbird that comes with integrated OpenPGP support. As previously announced, Enigmail will therefore no longer be supported on Thunderbird 68. Support will end on October 1, 2021.
Enigmail will continue to be available and supported on Postbox and on Interlink Mail & News.