Unread / Drafts

I have an email showing as unread but actually it’s a start of a email that for some reason ended in Draft as unread. The entry shows from me and the subject but that’s all. I also see it Drafts but there is no way to delete, edit, mark read or anything.

I looked in Gmail via web browser and there is nothing in Drafts.

How do I delete this? The email that it references was sucessfully sent after a connection issue reported by eM Client.

I’m running on a Mac and found the following command to enter in Terminal in another post here:
/Applications/eM\ Client.app/Contents/MacOS/eM\ Client /dbrepair

I ran it and the email in Unread was gone.