Free mail app

Here are some popular free mail apps:

1. ProtonMail: A secure and private email service that uses end-to-end encryption to protect your emails.
2. Tutanota: Another secure email service that uses end-to-end encryption and is based in Germany, which has strong data protection laws.
3. Gmail: While not entirely free, Gmail offers a free version with limited storage space (15 GB). You can also use the Gmail app on your mobile device.
4. Outlook: Microsoft's Outlook app offers a free version with limited storage space (5 GB). You can also use the Outlook app on your mobile device.
5. Yahoo Mail: Yahoo's email service offers a free version with unlimited storage space. You can also use the Yahoo Mail app on your mobile device.
6. Zoho Mail: A free email service that offers unlimited storage space and integrates well with other Zoho apps.
7. Mailfence: A secure email service that offers end-to-end encryption and is based in Belgium, which has strong data protection laws.
8. FastMail: A free email service that offers unlimited storage space and is known for its fast and reliable service.
9. GMX Mail: A free email service that offers unlimited storage space and integrates well with other GMX apps.
10. Mail.com: A free email service that offers unlimited storage space and is known for its simple and easy-to-use interface.

Please note that while these apps are free, some may have limitations or ads. Additionally, some may require you to create an account or provide personal information to use their services.