Hi all,
iCheckMail is a new app allowing to set a custom value for the Mail app background email check. Standard iPhone Mail preferences has only a few fixed intervals and the smaller one is 15 minutes.
With iCheckMail you can set any value (in minutes) starting from as low as 1. Setting 0 disables the auto check and turn back to manual mode.
Simply launch the app, insert value, wait for confirmation and you're done, the value remains till you change it again from iCheckMail or the standard Preferences on your iPhone.
It needs Erica Utilities and BSD subsystem installed, and you can install right with from Installer or Cydia from Big Boss packaging source.
Official website
iCheckMail - iPhone
Enjoy,
G