Google Sync was released earlier this year and helped you keep your calendar and contacts synced between your mobile phone and Google account. Now they've added support for your Gmail account to be pushed to your phone.
If you're sporting an iPhone/iPod Touch, Windows Mobile phone or Nokia S60 phone you can now set up Google Sync to actively push your email to your device ensuring you're never stuck waiting around for an update to see what's new in your inbox. From the Official Google Mobile Blog:
Sync works with your phone's native email application so there's no additional software needed. Only interested in syncing your Gmail, but not your Calendar? Google Sync allows you to sync just your Contacts, Calendar, or Gmail, or any combination of the three.
Check out the full post at the link below to see how to get Google Sync if you're not already a user and how to enable Gmail syncing if you've already got a Google Sync account.