Cera mail

You're referring to "CeraMail"!

CeraMail is a popular email client for Android devices, known for its simple and intuitive interface. It's designed to provide a clean and distraction-free email experience, with features such as:

1. Simple and minimalistic design
2. Fast and efficient performance
3. Support for multiple email accounts (Gmail, Yahoo, Outlook, etc.)
4. Customizable notification settings
5. Integration with other apps (e.g., calendar, contacts)

CeraMail has gained a loyal following among Android users who value a clutter-free email experience. If you're looking for a lightweight and easy-to-use email client, CeraMail might be worth checking out!