It is obviously in Outlook for Mac (not MAC) somewhere, otherwise Outlook would not be able to attempt to send it.
I use MS Outlook for MAC to manage my emails. I use smtp.gmail.com as my out going server.
I have sent an email with attachments (pictures), which Outlook is sending, but half way through the process it fails, reporting the following error: 5.2.3 our size guidelines. s19sm33812341wik.11 - gsmtp.
I cannot delete or amend the original email and its attachments, as it is not visible in any of the gmail folders!!!
can anyone advise me what and how to remove this error, as Outlook is constantly trying to send the email, which keeps failing!!!!