So I have started a branch to attempt adding this feature.
All I have done so far is add a delete button (at the message level), however, using messageIds doesn’t seem to apply the change.
Got to do some more rummaging but on my first pass I couldn’t see that the change is applied in Mailspring’s code - it seems like it may be a mailsync issue. Can anyone weigh in?
Branch: GitHub - glenn2223/Mailspring at handle-single-message
What works so far: deleting at message level when its thread has only 1 message