RE:RE: single pass pem-mime

Well, actually, there are some mail packages which provide
the capability such as first pass returns a complete header
structure, for example, the c-client in IMAP2/3 package.
I believe IMAP3 server can support MIME. 

But another issue comes out if we go with multipass approach.
What is the 'standard' for header information. Different mailers
have different header structures. Also, PEM should provide
API rather than the executable programs.

Nick