When I clicked on “unsubscribe,” it showed as a response to a completely unrelated email from 2014!! What in the world is going on?!?
All the unsubscribe link does is follow the url that is embedded in that message. Maybe it is corrupt.
Close eM Client and run C:\Program Files (x86)\eM Client\DbRepair.exe. The try again and see if there is any difference.
I ran the repair client like you asked, and there was no difference. The email went to the correct address, but it is showing under an email as if it were replying to the email from 2014, instead of the email that was unsubscribe was clicked in.
Can you explain what you mean by “it is showing under an email”.