symmetric email encryption

[Robert J. Hansen]

> Are symmetric keys more probable to be compromised than asymmetric ones? 

Immensely.  An asymmetric key is a secret held by one person; a
symmetric key is a secret shared by two or more.

> What I am suggesting is neither an alternative to regular OpenPGP 
> encryption nor meant as "real crypto" at all.

If you're not interested in providing real solutions, then I'm not
interested in having this conversation.