5 Biggest Email Service and Account Providers

2. Microsoft Corporation (NASDAQ:MSFT)

Microsoft Outlook is a personal info manager software included in the Microsoft Office suite. Outlook is essentially an email client but contains calendaring, task management, contact management, note-taking, journal logging, and web browsing. Outlook is introducing “Focus Time” in January 2023, allowing users to mute all notifications for a predetermined amount of time, allowing them to focus on critical activities. Microsoft Outlook has 400 million users worldwide.