The iPhone's touch-screen text input is not ideal for people who need to compose a lot of e-mail, but the device comes preloaded with settings for AOL Mail, Gmail, .Mac Mail, and Yahoo Mail, and it supports Exchange, IMAP, and POP3 mail. We easily set up access to a Gmail account and, to our surprise, a Lotus Notes IMAP account (mail only, however--we couldn't see our calendar or contacts).
On the PC, the iPhone syncs to your address book (Outlook, Outlook Express, Windows Live Mail, or Yahoo), calendar (Outlook or Outlook Express), mail settings (Outlook or Outlook Express), and bookmarks (IE or Safari). Of course, it syncs to equivalent Mac apps too.
Some editors thought that messages displayed beautifully; others thought that some HTML messages were too small, and they didn't like being unable to rotate the screen for more width. Some people may quibble with Apple's decision not to let users see messages from multiple e-mail accounts in the same window, but moving between accounts is easy. Another nice touch: Deleted messages swoosh into the trash can at the bottom of the mail screen.
The Safari Web browser delivers shrunken versions of desktop-style pages that you scroll and zoom in on to read. As a tool for reading Web content--news sites, say--Safari looks terrific.
But there are problems. The touch screen makes typing URLs and, especially, asterisked-out passwords tricky, and Safari's lack of support for Flash, Java, Real, Windows Media, and other non-QuickTime multimedia formats made some sites function incorrectly, so they wouldn't load visual elements, or didn't let us listen to audio or even log in. Downloading Web pages over AT&T's EDGE cellular data network wasn't as snappy as with Wi-Fi, but EDGE can certainly be usable for Web browsing if you are not in any particular hurry.