If you long to ditch your desktop e-mail client and conduct all your correspondence online, Yahoo! Mail may be the service for you. The latest version of the Web's popular mail site wraps unlimited storage space and handy features in an impressive new interface. But power users, beware--Yahoo! makes you pay for features that Gmail offers for free.

Yahoo! Mail officially supports Firefox and Safari, and the service works fairly flawlessly with Safari 3.1 though less perfectly with Safari 3.0. Yahoo! Mail sometimes ran sluggishly on my iMac G5, and even crashed these browsers once or twice.

Familiar look

Yahoo! Mail's new AJAX-powered interface mimics Entourage and other familiar mail clients. Selected messages open in a viewing pane below the message list, and mailboxes and folders appear on the left side of the screen. Like Apple's Mail, Entourage, and other desktop clients--but unlike Gmail --right-clicking messages reveals a full-featured contextual menu of commands.

Yahoo! Mail does a great job linking dates, addresses, and phone numbers to maps, calendar appointments, and address book entries.

It's easy to create and label new folders in the mailbox list, then drag and drop multiple messages into them. Thoughtful links let you empty the Spam and Trash mailboxes with a single click. Though I started receiving a trickle of spam almost as soon as I reactivated my long-dormant Yahoo! account, only one piece of junk mail made it to my inbox in several weeks of testing.

Yahoo! Mail was a bit slow to load messages when I opened a folder, but not unusably so. An impressive tabbed interface lets you easily switch between multiple open mailboxes and messages. In addition to e-mail, you can send SMS messages, or chat with friends on Yahoo! or MSN Messenger. Though some test e-mails sent from Yahoo! took hours to reach their destinations, others, including a text message to my cell phone, arrived almost instantly.

Users with free Mail accounts must endure Yahoo!'s fairly obnoxious ads. These included small but annoying graphics and text on the left of the screen, unsightly banners on the right, and a gargantuan ad that monopolized the inside of an empty mailbox. Even the text ads were big, colorful, and aggravatingly distracting. Advertisers might love them; I didn't.

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