Here’s the deal: you can use push email from MobileMe, Yahoo or a Microsoft exchange account. This is kind of limiting, seeing as most of the world doesn’t want to drop $100 on MobileMe (see my older post), doesn’t use Yahoo mail and isn’t a corporate email junkie. The good news is that someone has been thinking about the rest of us and that entity is Google. They are offering a free service called Google Sync, which is essentially a personal Exchange account that you can use with your iPhone and other mobile devices.
I have four email accounts that I want pushed to my iPhone. 1 Gmail, 2 Google Apps, and 1 external account. Since you can only use 1 Exchange account (Google Sync) on your iPhone I had to come up with a crafty solution.