Like most new iPad owners I wanted to setup Gmail, which is most power users primary email client, on the iPad so I could access email when I am away from my desktop or on the road. Until recently, I used iPhone for this task. However, I recall that when I setup my Gmail account using the default Gmail setup on the iPhone, it violated Gmail's conventions by actually deleted your mail instead of archiving it which IMO is what makes Gmail different than the rest of the email services I've used in the past. Another quark was that it stored my drafts locally on the device which needless to say was annoying. With this said, I didn't even bother to find out if they’ve fixed the issue on the iPad, I figured that the only way to be sure is to set it up manually.
Benefits to this manual setup included your iPad will now store Drafts and Sent Mail in Gmail instead of storing them locally on the Device. In this way if you access Gmail from your desktop or iPhone your drafts and trash will be accessible on that device as well.
Here’s what to do (This method will also work with the iPhone):
Alternatively, you can setup your iPad or iPhone using GoogleSync (Googles version of Exchange). I've been using this method on my iPhone since the release of the iPhone OS versions 3.0 back in 2009. This gives the user the ability to sync Google Calendar and Google Contacts. If your interested in this method of mail retrieval visit the GoogleSync setup page for the iPhone which I can confirm also works on the iPad.