To sum up, Outlook.com has taken 1st position as a flexible and user-friendly email service developed by Microsoft, serving personal and business communication requirements. It was started from Hotmail and later owned by Microsoft and now Outlook.com has progressed with built e-mail, calendar, address book, and schedule services flawlessly. The journey from Hotmail to Outlook.com reflects Microsoft's commitment to innovation and improvement, providing users with a modern and efficient email experience.