Good news for Pebble owners this afternoon. The company just posted an update for the smartwatch's companion iPhone app that adds support for incoming email push notifications, meaning you can get alerts on your Pebble watch when new emails arrive.
The app has to be running in the background of your iPhone for it to work, and it's only compatible with Gmail and other IMAP email services. But the feature should get substantially more functionality when iOS 7 is released, as it has better accessory support...