There is a new pull request by thyssentishman against master on the mblaze repository

https://github.com/thyssentishman/mblaze master
https://github.com/leahneukirchen/mblaze/pull/241

Add Drafts profile key
Instead of saving drafts messages together with sent messages when the Outbox key is set in profile, allow the user to set a Drafts key to store them separately.

A patch file from https://github.com/leahneukirchen/mblaze/pull/241.patch is attached