Microsoft is overhauling its free webmail service, dropping the Hotmail brand it has used since acquiring the product in 1998 and adopting the name Outlook.com.
The company says revamped service will help sort messages as they arrive and allow users to make internet calls on Skype.
It says the move will also help tackle the problem of cluttered inboxes.
The action may also be designed to win over users of Google's rival Gmail service.
