|Remove sections of messages
that have a matching MIME type.
||Use this option to remove
each message section with a matching MIME type. Each line should contain a
string naming a MIME type/subtype, e.g. image/gif. Leave
off the subtype to remove all parts with a matching MIME major type, e.g.
image. Blank lines are ignored.
After stripping message parts, any multipart attachment that is
empty as a result is removed all together. If the outer part's MIME type
matches one of the strip types, or if all of the outer part's subparts are
stripped, then the whole message is discarded. Finally, each
multipart/alternative section will be replaced by just the first
alternative that is non-empty after the specified types have been removed.