Outlook.com

Outlook.com
Screenshot showing Outlook.com inbox (with an open Skype window) on Outlook.com's own webmail interface
Type of site
Webmail, calendaring, contacts, and tasks
Available in106 languages
OwnerMicrosoft
Founder(s)Sabeer Bhatia and Jack Smith
URLoutlook.live.com
IPv6 supportYes
CommercialYes
RegistrationRequired
Users500 million
LaunchedJuly 4, 1996 (1996-07-04) (as Hotmail)
February 18, 2013 (2013-02-18) (as Outlook.com)
Content license
Proprietary

Outlook.com, formerly Hotmail, is a free personal email service offered by Microsoft. It also provides a webmail interface accessible via web browser or mobile apps featuring mail, calendaring, contacts, and tasks services. Outlook can also be accessed via email clients using the IMAP or POP protocols.

Founded in 1996 by Sabeer Bhatia and Jack Smith as Hotmail, it was acquired by Microsoft in 1997 for an estimated $400 million, with it becoming part of the MSN family of online services, branded as MSN Hotmail. In May 2007, the service was rebranded to Windows Live Hotmail, as part of the Windows Live suite of products. It was changed back to Hotmail in October 2011 and was fully replaced by Outlook in May 2013, sharing the same brand as the Microsoft Outlook software which is offered via a Microsoft 365 (formerly Microsoft Office) subscription.

Outlook is offered with any Microsoft account, using the @outlook.com and @hotmail.com domains. Various other domains, including @live.com, @msn.com, @passport.com and @windowslive.com, are maintained but are no longer offered.