Pebble Technology has updated their iOS app to support e-mail notifications. The smart-watch has been supporting e-mail notifications on Android for a while now, but it was rather difficult to get it to work on iOS. Pebble was able to find a way to push customized e-mail alerts from Gmail and general IMAP services to the smart-watch product though.
Pebble connects to iPhones and iPod through Bluetooth. The smart-watch alerts you with a silent vibration when there are incoming calls, e-mails, and messages.
You can download the Pebble app from the App Store now.