Making Emacs Autosaving of Files Ignore Email Drafts

This week I noticed that a ton of files like *message*-20201029-134012
piled up in my home folder. These are email drafts from message-mode
, and the numbers are a date-time-stamp. These didn’t appear ever before. So I figured it might have something to do with autosaving after looking at the change history of my configuration file – and it sure does.