This is the most annoying issue I have encountered using the new outlook. I'm dealing with stuck in draft folder all day with different emails. In order to push through, I basically have to login to gmail and recreate the email there and send....then delete the draft back in new outlook. Total waste of time and maddening to the point where I'm just about over this new outlook experiment. On a positive note, when it does send and receive emails, it appears to be much quicker receiving new emails,...no more waiting 30 minutes for server updates.
Microsoft, please fix this issue STAT,...for all of our sanity!