My email provider operates a Microsoft Exchange server through which I send and receive email, using Thunderbird (on Ubuntu 20.04 LTS). I do this both on a desktop computer and on a separate laptop.

Everything works alright, except for the synchronization of message tags. If I tag an email in Thunderbird on the desktop using the '1' key, then this tag does not show up on the laptop and vice versa. Fortunately, this kind of tag synchronization does work on other email accounts that I have.


Is there a way to get tag synchronization to work through a Microsoft Exchange server? (Assuming that using another email provider is not an option.)


2 Answers 2


I have found that Davmail works well for me.

(Davmail provides a POP/IMAP/SMTP/Caldav/Carddav/LDAP Exchange and Office 365 Gateway.) I've been using it for quite a number of years, most recently with Amazon Corretto as the Java runtime. There are times when the Exchange IMAP interface just doesn't work properly - and this is one of them.


I've found a workaround to the problem by setting up a script that synchronizes the file


between the two Thunderbird instances. This file is apparently where the information about message tags is stored locally. And so far, simply copying the file from one Thunderbird instance to the other is working well.

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .