[Mailman-Users] Header removal - where?

[Fil]

It is most probably your mailer (Netscape) that reads the List-* headers
and, instead of printing them on the screen, gives you this nice little
line.

@ Roger Buck (rog at saas.nsw.edu.au) :
> There is a subscription message ("Double-click ...")  that appears on
> all messages to/from the list (mailman 2.0 and 2.5) .

-- Fil