R2Mail2

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.

Since some people do not understand difficult sentences:
THIS IS DEMO WHICH DISPLAYS ONLY THE NEWEST 10 MAILS!

The unlimited edition of this app will be available via the Google Play Store in form of a purchasable key. The free version of R2Mail2 is also a replacement for our established and also free app X509Tools - so the ability to decrypt or verify content (in form of p7m-files) is even available without creating a mail account. To unlock the R2Mail2 and see all messages please install "R2Mail2 License" from Google Play (https://play.google.com/store/apps/details?id=at.rundquadrat.android.r2mail2license).

Features:
* 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)
* Unified Inbox and E-Mail Threading
* Peak Options for check intervals
* Search Function for messages per Folder
* IMAP shared folders

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)

The application needs the following Android permissions to run:
* Full Internet Access - required to send and receive emails
* Modify/Delete SD card content - required to access the private key store, download attachments and to write log-files
* Read Contacts - required to suggest email addresses from your contacts
* Network State - required to check if an Internet connection is present
* Vibrate – required for notification purposes
* WakeLock - to allow service to check mails in background

PLEASE DO NOT REPORT ERRORS IN COMMENTS! We cannot react on that!
If you get errors please use "Menu -> Report Error" on the start-screen to send us the log-file information in your preferred way!

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 http://r2mail2.com

Recent changes:
2.17:
- Fixed Startup Bug
- New messages are displayed unread again
2.16:
- Link are opened in browser again
- ReplyTo can be set in 'Advanced Settings->Other'
- Message are marked read on open (Exchange)
- Bugfixes
Add to list
Free
84
4.2
User ratings
287
Installs
10,000+
Concerns
1
File size
7836 kb
Screenshots
Screenshot of R2Mail2 Screenshot of R2Mail2 Screenshot of R2Mail2 Screenshot of R2Mail2 Screenshot of R2Mail2 Screenshot of R2Mail2 Screenshot of R2Mail2 Screenshot of R2Mail2 Screenshot of R2Mail2 Screenshot of R2Mail2 Screenshot of R2Mail2 Screenshot of R2Mail2 Screenshot of R2Mail2
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.

Since some people do not understand difficult sentences:
THIS IS DEMO WHICH DISPLAYS ONLY THE NEWEST 10 MAILS!

The unlimited edition of this app will be available via the Google Play Store in form of a purchasable key. The free version of R2Mail2 is also a replacement for our established and also free app X509Tools - so the ability to decrypt or verify content (in form of p7m-files) is even available without creating a mail account. To unlock the R2Mail2 and see all messages please install "R2Mail2 License" from Google Play (https://play.google.com/store/apps/details?id=at.rundquadrat.android.r2mail2license).

Features:
* 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)
* Unified Inbox and E-Mail Threading
* Peak Options for check intervals
* Search Function for messages per Folder
* IMAP shared folders

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)

The application needs the following Android permissions to run:
* Full Internet Access - required to send and receive emails
* Modify/Delete SD card content - required to access the private key store, download attachments and to write log-files
* Read Contacts - required to suggest email addresses from your contacts
* Network State - required to check if an Internet connection is present
* Vibrate – required for notification purposes
* WakeLock - to allow service to check mails in background

PLEASE DO NOT REPORT ERRORS IN COMMENTS! We cannot react on that!
If you get errors please use "Menu -> Report Error" on the start-screen to send us the log-file information in your preferred way!

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 http://r2mail2.com

Recent changes:
2.17:
- Fixed Startup Bug
- New messages are displayed unread again
2.16:
- Link are opened in browser again
- ReplyTo can be set in 'Advanced Settings->Other'
- Message are marked read on open (Exchange)
- Bugfixes

Android Market Comments
A Google User
Jul 29, 2015
Nice
A Google User
Jul 16, 2015
Trouble with recipient certificates. This application was nice. I had difficulty in getting the application to automatically install certificates from signed emails. It might be because the certificates were signed by a self-signed certificate authority, but my certificate was signed by the same self-signed a thority, and the application had no problem with installing that one. The results is that I could read encrypted messages, I could send signed messages, but I could not send encrypted messages due to the fact that I did not have a certifi
A Google User
Jun 14, 2015
Works Pgp and smime. Nice. Works well.
A Google User
Apr 24, 2015
Can't add more than one account and e-mails show up as random plain text. The description doesn't state this demo can handle only one account, nor does the description of the license key, so it's obviously a bug. Whenever I try to add a second account, at the very end I can't choose draft, trash, etc. folders and when I create the account without those, it won't show up anywhere, it just gets lost. Also now that I've tried adding a second account, the first stopped working properly, too. The messages show up as random-like plain text. And in the settings this message waits me: "cannot read stored application settings - please reinstall R2Mail2". I've sent error reports... but as far as my experiences with Android application support go I don't really expect anything. It worked for days, I wanted to buy it but I'm glad I haven't bought the license key just yet, probably I'd have just thrown my money out of the window.
A Google User
Mar 27, 2015
Should be able to import my ca.pem file. On pc, thunderbird imports my certificate authority ca.pem file and then my p12 file. R2mail2 will not accept the certificate authority file, but has a accept self signed option which I suppose gets the job done. Worse problem is that I received a S/MIME signed email, the key gets into the keystore, but I can not send encrypted email back to that user. R2mail2 complains it can not find a key for the email address, but the email address is clearly in the key.