I tried to send a new message with two attachments (3MB and 5 MB). eM Client kept trying to send but failed. I tried to remove the message (so it wouldn’t keep re-sending) , but I couldn’t find the message in the Draft box nor the Outbox. How could I fix this?
Are you using an Exchange account?
I get the same issue and get an error 507 message. I am sending from an Exchange account but it is not a server side issue because I can send the exact same message with the same attachments from OWA without any issues. Please advise what I can do to solve this issue.