Part of Google Apps

• Service with more than a billion users
• Outlook alternative
• Its logo has a blue, red, orange, yellow and green "M"
• Popular Google service
• Tech service with over half a billion users
• Web-based service with millions of users
• Element of the Google Apps suite with a spam filter
• Google's message service

Wikipedia Word definitions in Wikipedia
Gmail is a free webmail system by Google. It may also refer to: GMail Drive , a free third-party Windows Shell namespace extension ("add-on") for Google's Gmail GmailFS , a virtual file system