R2Mail2 - GnuPG encrypting email to a different email address than in the public key I have a friend's public key with the associated email address bla@bla.com. I would like to use the key to send an encrypted email to the email address not@not.com. 

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

Thanks.
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:

http://hackonadime.blogspot.de/2012/03/securing-your-mobile-email-thunderbird.html