Can't send in Mail as it says gmail is offline.
All was working fine then suddenly this afternoon I stopped being able to send emails. I can receive - but not send. I've followed the Apple Support/Help suggestions but nothing works. I can't seem to change the setting; it stays stuck on Gmail Offline. Have you experienced this and solved it? If so, please could you advise me?
MacBook Air, OS X Mavericks (10.9.5)