Read and write encrypted e-mails

p≡p is a cyber security solution which protects the confidentiality and reliability of communications for citizens, for public offices and for enterprises. It provides end-to-end cryptography in all common crypto-standards through the app that you install on your phone.

p≡p for Android makes e-mail encryption easy on mobile devices for everyone by automatic and seamless integration of end-to-end encryption. Set it up with your existing e-mail address under a minute. Send and receive as many messages as you want without any restrictions on the number of devices the p≡p app runs on.

p≡p supports the user with advanced automation and is fully compatible with OpenPGP

  • it will automatically encrypt your e-mail and attachments, including pictures

  • it can ensure no one can intercept your perfectly encrypted e-mail

  • it is peer-to-peer and uses no central service

  • it works with all your existing e-mail account(s)

  • it can authenticate your communication partner and prevent identity theft

  • it offers security and privacy by default

p≡p is end-to-end and supports all commonly used Android devices.

p≡p is easy for your recipients too – depending on their security capabilities, they can exchange encrypted messages with you.

With p≡p, you don’t need a separate account, you can send secure messages to anyone anywhere, regardless of their email provider.

Just install the app and you can communicate in confidence with your peers.


Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Download F-Droid
  • Version 1.0.101rc1.withoutKeysync (2) - Added on 2018-06-20

    This version requires Android 5.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Download APK 20 MiB PGP Signature

    • android.permission.RECEIVE_BOOT_COMPLETED
    • android.permission.READ_CONTACTS
    • android.permission.READ_SYNC_SETTINGS
    • android.permission.MANAGE_ACCOUNTS
    • android.permission.GET_ACCOUNTS
    • android.permission.USE_CREDENTIALS
    • android.permission.WRITE_CONTACTS
    • android.permission.ACCESS_NETWORK_STATE
    • android.permission.INTERNET
    • android.permission.VIBRATE
    • android.permission.WAKE_LOCK
    • android.permission.WRITE_EXTERNAL_STORAGE
    • android.permission.SYSTEM_ALERT_WINDOW
    • security.pEp.permission.READ_ATTACHMENT
    • security.pEp.permission.REMOTE_CONTROL
    • security.pEp.permission.READ_MESSAGES
    • security.pEp.permission.DELETE_MESSAGES
    • android.permission.READ_EXTERNAL_STORAGE