parsing emails

[Michele Simionato]

I use Mozilla or Netscape, so my emails are stored in the nsmail
directory
or the Mozilla's equivalent. What's the simplest way to look at them
and
extract the mails with a given subject? In principle I could use a
regular expression, but I bet there are better solutions already
available.
Second question: are Mozilla and Netscape compatible, i.e. are the
emails stored with the same format and can I use the same extraction
method on both?

TIA,


             Michele Simionato