From what I understand, Apple doesn't do this because of battery life concerns.i hope that whenever this magical update comes, it will allow mail to check every second like the blackberry can. every 15 minutes isn't acceptable, unless Gmail comes out with PUSH mail to the iPhone.
well then i hope gmail brings PUSH email to the iPhone. with their close relationship with Apple, i was surprised it was yahoo that did it in the first place.From what I understand, Apple doesn't do this because of battery life concerns.
I don't have an autocheck tab?You go into settings --> mail --> under message you will see an auto check tab.
Touching the tab will reveal manual, 15 minutes, 30 minutes, hour.