I'm trying to set up my POP3 Gmail account on a Retina MBP running OS X 10.8.2. A few months ago, I managed to do the same thing, the first time around, on an iMac, working with the same Gmail account and under an earlier Mountain Lion release.
This time, Mail gives me no errors, and despite having followed Google's guidelines on how to set up POP3 email on Apple Mail, no messages will download on the MBP, even after checking for new mail, and right-clicking the account to force download. Has anyone encountered this issue, and found a fix?
Best Answer
Review your settings on the Gmail website; could you have perhaps overlooked the checkbox to Download all messages from today on (or whatever your preference is)?
By the way, I have my Mail.app accounts all set to POP3, and iDevices, of course, are on IMAP ... so that works; on the GMail page, you can leave them both on.
Check your Mail.app account preferences: in Advanced, the port needs to be set to 995. And have you run Mail's Connection Doctor, under the Window menu? When it can't connect, clicking on the error will take you right to the place in Mail preferences where the error is.