When will management of server-side tags for Dovecot be supported?

Not working for my particular situation.

Let me try to clarify:

eM Client (EMC) can RETRIEVE server-side tags on an individual email message basis (message). EMC cannot RETRIEVE all of the server side tags created on the mailbox (mailbox). EMC cannot CREATE server-side tags. EMC can DELETE server-side tags on an individual email basis. EMC cannot UPDATE server-side tags on a mailbox lever (mailbox) and since the update function happens in the “manage tags” interface (the mailbox level tag interface) it follows that EMC cannot UPDATE server-side tags on a (message) level either.

Here’s a table comparing Thunderbird and eM Client’s broken imap label support for Dovecot:

Server-Side
TAG Mangement
ThunderBird eM Client
Create (message) YES NO
Create (mailbox) NO NO
Retrieve (message) NO YES
Retrieve (mailbox) NO NO
Update (message) NO NO
Update (mailbox) NO NO
Delete (message) NO* YES
Delete (mailbox) NO NO
* Only Tags that were created on the local instance of TB can be deleted. This change is reflected server-side.

If EMC developers are interested in getting this working please let me know and I will give of my time in a meaningful way (5 hours a week? for a month?) as this would be of serious benefit to me and the company I work for and I am sure I am not alone. I would help test/troubleshoot.