For all those that already have the T-Mobile G1 and all those just about to get it within the next few days after European launch this video review will be just for you.
This is the T-Mobile G1 email and messaging review that should help you out a little. The video review shows that the Notification Bar Alerts is a pretty cool feature that you should keep an eye on.
All in all it is pointless me telling you all about the Email and messaging features when it is easier to watch the video provided.