It was corrected then, but a few dozen mis-addressed messages where he CC'd himself are stored in the IMAP Sent folder on the server. It was not noted until a few days later the user questioned why The situation is that back in 2016, in Mail (it was Win 7 and WLM at that point), a typo was made in adding the user's account - the domain name part of the email address was missing a letter. If it were Outlook, when addressing a message, as we start typing a recipient's name or email address, the suggested matching contacts pop up in a small list - we have an "X" there to delete a specific one. I have been unable to find where these entries can be edited, specifically I need to delete an incorrect entry. I gather I am asking about the equivalent of what would be "suggested contacts" in Outlook.