You've long been able to search the From, To, and Subject fields of messages in iOS's Mail. But iOS 5 lets you search the body of messages, as well. When using the search field (which you access by scrolling up past the first message in any mailbox), just type your search term and choose the All option. Messages that match the search appear in the list below; Mail even searches messages on the mail server. However, in our testing, the feature didn't work with every email account; for example, it worked well with MobileMe and Yahoo email accounts, but not with Gmail accounts.

We've the capability to flag messages for later action. In iOS 5, Apple has at last added support for viewing and toggling message flags, although the feature isn't yet on a par with the .

When viewing a received message with the header details visible--if you see a Details link to the right of the From field, tap the link to view the detailed header--tap Mark, which is to the right of the message date and time. You'll see a popover listing Flag and Mark As Unread (or Read). Tap Flag and a standard mail flag is applied to the message. The message will now display a small, red flag next to the Mark link when viewing the message, and to the left of the message in any message list--in both iOS's Mail and OS X's Mail, as well as in other desktop and Web email clients that support flags.