I accidentally changed my servers for my me.com account, but after I realized what I had done and changed it back I now get this error message.
imap cannot open folder “Junk Email”. (NO [NONEXISTENT] Mailbox does not exist (took 42 ms))
Could be you have the wrong Junk Spam folder selected.
Go to “Menu / Accounts” and click on your account “IMAP” tab and check at the bottom in “Special Folders / Junk” field that you have the correct Me.com Spam folder selected.
You can “remove the automatically detect special folder names” to check if it’s the right one and change it if it’s not the right one.
If the Spam folder is the correct one, then suggest next “if you have been making regular eM Client backups”, try restoring a recent dated backup via “Menu / File / Restore” when you know it didn’t have that error.
Or if you have no backups, then “you might need to remove and readd” your IMAP account which should also normally fix it.
I unchecked the “Automatically detect folder names” and changed the folder from “Junk” to “Junk Email” thinking that was the proper name, but then the the actual folder name in the list changed to “Junk Email” and the message said something about “spam”, but I checked icloud.com and it’s “Junk” up there, so when I change it back to “Junk”, emClient changes it in the list to “Junk Email” and I get the cannot open the folder “/spam” message. It’s behaving strange. So I am gonna try the restore command you mentioned.