Wishlist: body modifications
at the moment, wonderbolt only modifies the header, usually list-unsubscribe headers etc. However, nowadays users expect unsubscribe links in the body of the mail (customarily, at the end of the mail body) and only sophisticated users (and mail user agents) look in the header of the mail. Would it be worth it to add body modifications to wonderbolt? Probably append and prepend functions for subject and main body part would cover basically everything and doesn't sound too scary? However, I don't know how hairy the whole MIME part situation is.