[CoolChum]

You need to export the profile and re-import on each machine. If you make any changes on one machine you want to see it reflected on the others.

The profile import is a bit iffy and there was some odd issues with downloading profiles over 2GB IIRC, the last time I did it (which was over 2 years ago).

There seems to be a lot of focus on features that IMO that I couldn't care less about and some outright stupid UI decisions like the context menus being changed after 20 years for god knows what reasons.

The result was that I just gave up and use Thunderbird on one machine and web-mail on all the others. I suspect I will just drop Thunderbird as a result.