mail reader that uses gzipped archives from http instead of an nntp server

Is there a mail client that can be configured to use gzipped arc开发者_开发百科hives of mailing lists directly from where the mailing list is hosted rather than a central nntp server ? nntp is either not free, or slow in my experience.

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i guess i can open the unzipped gz file as a text file in emacs.
turn on rmail-mode.
M-x undigestify-rmail-message
and rmail is ready to go... now i just need to right a download (wget or downloadthemall) and
unzip script followed by concatenating the mail files...

gzip -d *.gz ; cat *.txt > allinone.txt

then can view in emacs as above or move into thunderbird local directory, for easy viewing / searching.