Sorry about this lots of PR dear Benoit :) I just really think about where to migrate, stalwart have some problems, postfix+dovecot... Lets say i cant live with that low flexibility. So i want find all critical edge cases that can lead to data corruption BEFORE moving on James.
So please dont be mad at me guys who reviews all this. The more feedback i got the more i populate my I database to make more correct and dry PRs. After all critical things i move to optimise - warming, caching etc.
