Content type in e-mail

Francisco Stefano Wechsler <[email protected]> Tue, 2 Mar 2004 22:26:38 -0200 (FNT)
Newsgroups gmane.linux.redhat.release.valhalla
Message-ID <[email protected]> 
  Can somebody show me a good reference on the meaning of
"multipart/alternative" and "multipart/mixed" content types? Do Outlook
Express and Mozilla Mail abide by these definitions?
  The reason I'm asking is that I'm trying to filter out all e-messages
that come with html text (usually sent through Outlook Express). The
filtering program is popsneaker 5.5, which should delete all html messages
in my pop3 box, BEFORE they get downloaded.
  Many thanks in advance.

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