I get a message upon opening EM Client from Operations that does not go away. This just started a few days ago

(IMAP) unable to upload mesage to folder"(GMAIL)/ALLMAIL". (TOOBIG) message too large.https://support.google.com/mail/answer/6584#limit)
I get that the message is too big but this pops up everytime I open my email.  How do I stop this error?

Go to your outbox and delete the attachment in the problem email as sounds like its over the Gmail send size limit. Or delete the email altogether in the outbox and create a new email with multiple smaller attachments.

Thank you, they were not in the outbox but I was able to find them and deleted them and the message no longer pops up upon opening email.