I have a friend's public key with the associated email address [email protected]. I would like to use the key to send an encrypted email to the email address [email protected].

Is this possible in R2Mail2 for Android? I can in Thunderbird/Enigmail, but it doesn't seem possible in R2Mail2.


3 Answers 3


Here's an idea for your problem. Had the same as well. Searched a long time to get my Keys to the Android phone.

I work with OSX. There is a tutorial how to Export the keys it seems to be a matter of Key and Certificate conversion. Hope that helps:


  • Welcome to the Android Enthusiasts! Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference (please edit your question and do so). Otherwise your question ceases to be helpful in case the link dies.
    – Izzy
    Jan 24, 2014 at 13:03

Encrypt your message to any public key(s). I also recommend encrypt-to-self. Then send it as an attachment to any address.


No thats not possible within R2Mail2 at the moment. As soon I have time I will implement an option where you can link additional email addressee to an public key.

regards stefan

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