I Googled [gmail push Mavericks OR 10.9 "use idle command"], and restricted results to the last year; absolutely nothing came up, so I decided to post this: Gmail seems to no longer push email to Apple Mail in Mavericksat least for me. In OS 10.8 and before, enabling "Use IDLE command if the server supports it" caused Gmail to instantly push new emails to Apple Mail. No longer. With the new "Check for new messages Automatically" option, new messages aren't coming in at all, or with severe delays (I don't recall which). When I change it to "Check for new messages Every minute," it checks every minute, which is okay, but not what I had in previous OSs: instant pushing of new messages. Has anyone managed to solve this problem? Or does anyone at least know what's causing the problem, and whether it's potentially fixable?