Originally Posted by
iMore Question At the moment I am doing it by selecting and trashing a few at a time but it is going to take an awfully long time to do them all in this manner.
How is the email configured? If it's POP3, then yes, you will have to delete each message individually. If you set it up as IMAP, you can make the changes on any device where gmail is configured as IMAP, or the gmail.com web mail page. Also, as some have indicated, you can delete the account and then re-add it (as IMAP).