I just installed [R2Mail2][1] and it seems to work fine so far, but I didn't understand the key generation procedure at the beginning.

What is this key for? Is this already a new GPG key-pair I can use? or is it just some internal stuff I don't have to care about?

How can I generate a GPG keypair inside R2Mail2? Or do I need [APG][2] to create my keys?


  [1]: https://play.google.com/store/apps/details?id=at.rundquadrat.android.r2mail2
  [2]: https://play.google.com/store/apps/details?id=org.thialfihar.android.apg