What's a good Android app for sending and receiving encrypted emails?

Proton Mail: Encrypted Email is an excellent Android app if you prioritize the privacy and security of your email communications. It uses end-to-end encryption, meaning that your emails are encrypted on your device and can only be decrypted by the recipient, ensuring that no one, not even Proton, can read your messages in transit or at rest. This is especially important if you handle sensitive information or simply value your privacy. The app also offers features like password protection for emails sent to non-Proton Mail users, self-destructing messages, and two-factor authentication for added security. Proton Mail's user-friendly interface makes it easy to send and receive encrypted emails without needing any technical expertise. With its focus on security and privacy, Proton Mail: Encrypted Email is a solid choice for anyone seeking a more secure email experience on their Android device.