K-9 Mail is an open source email client that works with basically every email provider. Features * supports multiple accounts * Unified Inbox * privacy-friendly (no tracking whatsoever, only connects to your email provider) * automatic background synchronization or push notifications * local and server-side search * OpenPGP email encryption (PGP/MIME) Install the app "OpenKeychain: Easy PGP" to encrypt/decrypt your emails using OpenPGP. Support If you're having trouble with K-9 Mail, ask for help in our support forum at https://forum.k9mail.app Want to help? K-9 Mail is a community developed project. If you're interested in helping to improve the app, please join us! You can find our bug tracker, source code, and wiki at https://github.com/thunderbird/thunderbird-android We're always happy to welcome new developers, designers, documenters, translators, bug triagers and friends.