This choice has the advantage of forcing a <a href="https://support.mozilla.org/en-US/kb/dedicated-profile-thunderbird-installation">dedicated profile</a> for each Thunderbird, which allows you to have both the release version and the beta version operate independently. So you can:
This choice has the advantage of forcing a <a href="https://support.mozilla.org/kb/dedicated-profile-thunderbird-installation">dedicated profile</a> for each Thunderbird, which allows you to have both the release version and the beta version operate independently. So you can: