how to parse an email message and process various information

Question

Is there any library to parse email messages? I know there are a lot. In addition to basic MIME parsing it should be able to parse things like:

1. If the mail is a forwarded message: parse and tell me the original sender of the message.
2. Get the the parts that should be quoted. I mean like Gmail shows "- Show quoted text -"

It should support one of these: C/C++, PHP, Python

Answer 1

You will, most probably, find some code for it in Spam Assassin.