Earlier this year, the folks at Google launched Google Sync, which allows you to sync your Gmail Contacts and Calendar on the most common smartphones.  Now, Google has added new functionalities to its Sync feature, allowing you to “push” you Gmail messages directly to your iPhone, Windows Mobile and S60 devices.

Just go to the Google Mobile Blog and follow the instructions therein:

To try Google Sync, visit m.google.com/sync from your computer. If you’re already using Google Sync, learn how to enable Gmail sync.