Does Google/Google Groups have NNTP servers, to which one can connect and (possibly upon authentication) download previously-posted messages in a Google Group by group name?
Related question, but in a more limited context:
Access Google Groups with newsreader (NNTP / Thunderbird)
Best Answer
Google Groups as platform doesn't support NNTP, it supports access through a web browser and email. The specific features available for each group depends on the group's owner/administrators.
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