Rated 4 out of 5 stars

Very nice, works nicely. Good job!
Although ist would be cool having the QNote Button also for the main toolbar.
And today I got the following error message trying to add a QNote to a mail I received: Can't create note. Message without 'message-id:' header
Can this be fixed?
I put a bounty of 100€ on bountysource for migration to TB78 but I pulled it back now since you were faster than the developers there. I will donate it to you as soon as everything works smoothly :)

This review is for a previous version of the add-on (0.6.1). 

If the message-id: header is missing there are no option to save it now. Maybe in the future I will think something up. Any ideas then how to uniquely identify message w/o message-id: header?
Will take a look on main toolbar option.