If you want a more up-to-date version of Thunderbird on Ubuntu, I highly recommend using the thunderbird-stable PPA:
https://launchpad.net/~mozillateam/+archive/thunderbird-stable
If you want a more up-to-date version of Thunderbird on Ubuntu, I highly recommend using the thunderbird-stable PPA:
https:/ /launchpad. net/~mozillatea m/+archive/ thunderbird- stable