Post 10.10.4 Google IMAP accounts not working
Just updated to 10.10.4 and in Mail 8.2 my three Google IMAP accounts ceased connecting. Worked fine prior to upgrade. Suggestions?
MacBook Pro with Retina display, OS X Mountain Lion, 2.6 — 16/768
I found in another thread that if you go to Mail -> Preferences, then click the account on the left; click the Advanced tab, then make sure "Automatically detect and maintain account settings", then it works. Hope this helps in your case. Don't click the Accounts option from the Mail menu (I kept doing that and couldn't find the advanced settings).