K-9 Mail is an open source email client that works with basically every email provider. <b>Features</b> * 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 <a href="https://f-droid.org/packages/org.sufficientlysecure.keychain">OpenKeychain: Easy PGP</a> to encrypt/decrypt your emails using OpenPGP. <b>Support</b> If you're having trouble with K-9 Mail, ask for help in our <a href="https://forum.k9mail.app">support forum</a>. <b>Want to help?</b> 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 <a href="https://github.com/thunderbird/thunderbird-android">https://github.com/thunderbird/thunderbird-android</a>. We're always happy to welcome new developers, designers, documenters, translators, bug triagers and friends.