TUAW's Daily App: Mailboxes for iPad
Mailboxes is a new app from Lilliput Labs that fills one simple need. While there are lots of ways to read email and specifically Gmail on your iPad already, nearly all of them are open to anyone using your device. If there are a lot of members in your household, or if you have roommates or co-workers who also use your iPad, you might not want them having access to your email all the time.
Thus, Mailboxes is a multi-user Gmail client for the iPad -- you can register it with your Gmail account (or multiple accounts), and then each account can be given a PIN, which will automatically lock you out when the iPad goes to sleep or the app is turned off. Unfortunately, the app's actual mail reader is the Gmail web interface (so no offline reading), but if you wanted to read your mail in Safari, you'd have to be online anyway.
At the very least, for US$2.99, it'll give you the security of knowing that you won't accidentally leave a Safari window open, or have someone go snooping around in your Mail app. Not everyone will need an app like this, but if it fits your situation, it could be a lifesaver.
