Change mailbox to alias

[SuperJERK22]

This way I don't have to delete the mailbox inclusing the aliases and then create a new mailbox and then add all the aliases again.

Would this be possible?

[barryo]

This is not within our current plans or time. Contact me if this is something you want to fund commercially.

As a quick win, just manually delete the mailbox database row and edit the alias row.