Popular mails

Here are some popular email services:

1. Gmail: Google's free email service, with over 1.5 billion active users.
2. Outlook: Microsoft's email service, with over 400 million active users.
3. Yahoo Mail: Yahoo's free email service, with over 250 million active users.
4. ProtonMail: A secure and private email service, with over 20 million active users.
5. Tutanota: A secure and private email service, with over 2 million active users.
6. Zoho Mail: A free email service with over 30 million active users.
7. AOL Mail: America Online's email service, with over 20 million active users.
8. Mail.ru: A Russian email service, with over 100 million active users.
9. Yandex Mail: A Russian email service, with over 90 million active users.
10. FastMail: A paid email service with over 1 million active users.

Note: The number of active users may vary depending on the source and date.

These are just a few examples of popular email services. There are many other email services available, each with their own features and user bases.