Email drafts will NOT STOP popping up...
I am being constantly bombarded by new windows popping up with an email draft any time I open my mail app on my Mac mini. They seem to be coming from the same email address, and each one of them is for an event that I have set up in my calendar. Each draft title is "Alert:________" with the blank standing for some event I've had in my calendar in the last few years. The drafts only show up on this computer.
I can't use my mail app anymore. If it's accidentally opened, I have to force quit. Any ideas on how to help?
Mac mini, macOS 10.15