Category not Synching

I am looking to be able to set a category on one client, (connecting to a work IMAP mailserver) and it to synch onto other clients accessing the same mailbox. i.e set it as blue on one client and it to show as blue on all other clients accessing that account. (This did work on Thunderbird)
It doen’t seem to synch.
Am I missing something? Otherwise a very nice bit of software and will move to pro version if this is supported.

Bump… No response after many days so I assume not supported. Now un-installed so dont bother with reply now.