Kopano WebClient has many unfixxed bugs, so we are on to switch to Thunderbird. Multiple people are using the same IMAP Account for business. They want to use the “Tag” (German: Schlagwort) function to mark mails with colors. Unfortunately the tags are not getting synchronized between the different clients. A little bit research (source: https://forums.zarafa.com/showthread.php?5078-Thunderbird-amp-IMAP-email-colortagging&p=24886&viewfull=1#post24886) showed that a feature called PERMANENTFLAGS is necessary for this function to work. How can I enable the feature on IMAP?
Thanks a lot.