Hotmail Login was one of the first webmail services on the Internet:
www.Hotmail.com. Hotmail was launched on July 4, 1996, and then Hotmail was sold to Microsoft in December 1997 for a reported $400 million.
Transition to Outlook.com
Outlook.com was first introduced on July 31, 2012 with beta version. Existing Hotmail customers could freely upgrade to the preview version of Outlook.com and downgrade back. According to Microsoft, the upgrade was deployed on April 3, 2013; the user kept their existing Hotmail accounts and received the option of having an @outlook.com email address.
https://hotmailhelper.com/