Microsoft Office Outlook, Outlook Express, and Entourage use the legacy DAV protocol to access Hotmail messages; which’s now retired. As Hotmail storage has evolved, DAV has become an inefficient solution for syncing e-mail (it downloads the whole mailbox instead of just changes). “We’ve two alternatives now: DeltaSync and POP3. DeltaSync synchronizes your e-mail, just like DAV, but is much faster since it only downloads the latest changes to your mailbox. Both the Windows Live Mail and Outlook Connector e-mail programs use this efficient protocol. POP3 is a tried-and-true protocol and works with nearly all e-mail programs. If choosing to use POP3, there’re a couple of things you need to keep in mind about the protocol,” announced.