Answer : 2. "Microsoft Outlook"
Explanation :

1. Outlook.com is a personal information manager web app from Microsoft that includes webmail, scheduling, contacts, and tasks services.

2. It was founded as Hotmail in 1996 by Sabir Bhatia and Jack Smith. It was acquired by Microsoft in 1997 and relaunched as MSN Hotmail, later as part of the Windows Live suite of products. As part of Windows Live Hotmail was rebranded.

3. Microsoft phased out Hotmail in October 2011, relaunching the service as Outlook.com in 2012.