SUMMARY *** I have Zimbra account with tagged messages. Even if I recreate a TAG in KAMIL, messages that I know have the same TAG, are show a there was none. I also notice if I apply a TAG from KAMIL to a message and recreate it on Zimbra (or other IMAP client), the message has no TAG. *** STEPS TO REPRODUCE 1. Sync an account with tagged messages 2. Recreate the TAG(s) on kmail 3. Apply a TAG to message OBSERVED RESULT Only the message I apply the TAG on KAMIL is showing the related formatting (color, font etc). Apply a TAG to a message that has none, will not be saved server side. EXPECTED RESULT All the messages having the same tag shall show the related TAG format. Also if I create new tags from KAMIL and apply to a messages, it shall be saved server side (as non standard imap flag). SOFTWARE/OS VERSIONS Linux/KDE Plasma: KDENOEN KDE Plasma Version: 5.27.7 KDE Frameworks Version: 5.109.0 Qt Version: 5.15.10 ADDITIONAL INFORMATION