Download R2Mail2 License apk 1.0 free for Android smartphone

8 Aug
R2Mail2 License

Posted by rundQuadrat OG in Communication | Aug. 8, 2013 | 13 Comments

Apk file size: 46.0 KB

This is the license key application for R2Mail2 and only works in combination with the main application.

Please install R2Mail2 ( first!

This license key removes the limit of 10 displayed messages in R2Mail2!

On some phones like new HUAWEI devices apps do not start as intended. In this cases you need to mark the license app as "protected" or "trusted" application. On some other roms you need to mark the license app to autostart:

- On Huawei device go to Settings > Protected apps > check "R2Mail2 License" where.
- On Xiaomi devices makes sure your phone has the "Auto-start" property enabled for "R2Mail2 License".

We noticed some problems with the Google Play licensing server. If R2Mail2 still claims to be in demo mode after installing this app please do the following:
* System Settings -> Manage Apps -> Google Play Store: "Force Stop", "Clear Data" and "Clear cache"
* System Settings -> Manage Apps -> R2Mail2: "Force Stop"
* Restart R2Mail2

If you still have problem please send us an error report or mail to android [at] rundquadrat [dot] at.

About R2Mail2:
R2Mail2 is an email client for Android OS which provides cryptographic capabilities, such as Digital Signatures and Digital De- and Encryption based on personal Soft-Token keys (.p12 format), as for example provided by a Trust Center or generated by PGP applications. Even though we focus on the best cryptographic experience in the Android email world, we try to provide a full functioning mail client with corresponding safety features in general.

* E-Mail Server: IMAP (incl. pushmail/idle), POP, SMTP and Exchange (>2007 SP1)
* SSL with X-509 client certifiate authentication
* An database in which the mails are stored encrypted
* Special Attachment View (browse your attachments without checking single mails)
* Dark and Light Themes
* Switch for Html and Text view options
* Peak Options for check intervals
* Search Function for messages per Folder

Main Cryptographic Features:
* Private keys and passwords are stored in an encrypted database (Key-Store) and protected by a Master Password.
* The security settings allow the configuration of encryption parameters, signature and certificate validation methods (OCSP and LDAP).
* Full S/MIME and PGP Plain and PGP MIME support
* Automatic selection of S/MIME or PGP for each recipient
* Full support of Android Root Store
* Certificate import of .crt, .pem and .asc formats
* Certificate/Key import from KeyServer LDAP or HKP (HTTP)

Informations about Private Key and Validity Handling:
The application comes without a personal key pair (the users private and public key) - so it is fully functioning in the sense of sending and receiving emails as any other mail client and provides the correct usage of validation if the mail you receive is signed by the sender.
For signing or encrypting a message it is necessary to use a private key you own. Turn to a Trust Center of your choice as a source of supply. You can find a list of trust centers, which are trusted within the Android world, in the Certificate Store (CA section) of R2Mail2. Please be aware that this app can only support Soft-Token in form of P12-files and will not work with smartcard-based certificates.

The private key you use for signing and decryption is bound to the validity of the certificate. This means, that after the certificate is revoked or no longer valid (because the date stated in the field “Valid To” of your certificate is in the past) signatures will not be possible. Nonetheless, we implemented the function to decrypt messages with private keys even with no longer valid certificates. So your messages will always be available to you, even with older keys.

For more information visit

rundQuadrat OG part of our Communication and have average installs from 1000 to 5000. Last Update Aug. 8, 2013. Google play rating is 87.0504. Current verison is 1.0. Actual size 46.0 KB.

Download r2mail2-license.apk 46.0 KB


Martin Broll

Preserve Privacy I was searching for a while to find an APP solving my encryption problem. I use PGP and SMIME with my compters but the link to my Android Tabled was still missing. The APP works very well and makes message encryption smooth. I run the APP on a Asus Transformer TF201 and it works without problems. I definitely will recommend this APP!

A Google User

Don't Stop Now! Nothing even comes close to this X509/PGP email client "A++". Very responsive developer. Add PGP public key lookups for unknown senders with an add to cert store option - add more email client features and polish - and I believe that most pop/imap email users (exchange not one of my needs) will need to go nowhere else for secure email exchange. Bought license to encourage future development - Good Luck! (EVO 4G MikG ROM/2.3.5)

Ripunjay Pandey

Nice application Is a nice application but change in account colour don't reflects in synchronized emails.

Eduardo Ramos

Excellent. As promised, purchased immediately when I noticed the UI had been updated. Best client I've used on android for secure emailing!

Ho Kit Robert Ong

Works It works with pgp and. Mime.

Chris Harpner

The ONLY working solution On Android that works with your EXISTING encryption keys! I've been looking for almost FIVE YEARS for a solution that works with my EXISTING PGP keys and FINALLY found it!

Павел Бо

Not attempt Russian letters Please fix it. KOI-8 or else.

notlisted notlisted

Finally my passwords are safer! Was previously using K-9 mail app but was horrified when I discovered (like many email apps) it stored my email passswords in plain text on phone. I was delighted to find r2mail2 encrypts my passwords (and downloaded email messages) via Android's keystore process. I use a master password to unlock my mail and can set how long I want my decrypted passwords cached in memory. I haven't even used this for sending / receiving encrypted mail yet and I love it already! (Just wish it was open source)

Thomas S

Worth every cent A smooth implementation of S/MIME; that alone makes it worth it. Exchange support and advanced security controls are the icing on the cake.

Gary Cartagena

Stopped working almost immediately The R2 mail demo worked until I installed the license. Then suddenly my ssl server connections were bad and my personal keys disappeared. What a complete waste of my time.

Fergal Monahan

Superb Well worth the purchase, far superior to K9 and other competitors. solid security, implementation of the key aspects to an android email app for the security conscious, and not to mention lovely UI

Fouad Ramsis

Great and complete solution for mail and key management I purchased the app and license, installed on my Nexus 6P with Android 6.01, works great. But I have an other device, Nexus 5 with copperhead on it, no Google services and would like to install it there too, but how ?

Fergal Monahan

Well worth the purchase, far superior to K9 and other competitors. Solid security, implementation of the key aspects to an android email app for the security conscious, and not to mention lovely UI

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