> I see. So it is one email, but there is never actual double encryption > on the same text. It is two single encryptions. I think I am > understanding more.
It is one email which is encrypted only _once_, but against a set of puclic keys which get referenced in the cipher text. So it is also possible to have more pgp recipients than two. Obviously, the de- and encryption algorithm is designed to support this. But keep in mind, as more public keys are used the attack vector gets broader. Certainly you can read how the crypto works (prime numbers) online or try to ask on the pgp mailing lists for more detail. -- Bastian
