> A classical simple system for auto subscribing for email notifications for
the thread one posts to is much simpler.
Being a protocol, it is not possible to embed custom / arbitrary logic into
NNTP. It is so with any protocol. Web based forums can include any number of
convenience logic, such as voting, custom subscription logic, editing[*],
etc. OTOH, it is web interface after all, with its own inconveniences. It is
like POP3 mail vs. web-mail.
[*] In nntp there is only a short duration in which you can edit your post,
and in some cases even that is not possible.
As for NNTP / SMTP / HTTP integration, it is possible indeed. E.g.
trisquel-users (web interface) is integrated with a mail list. Any
combination is possible. But such integrations depend on custom service a
specific server offers, i.e. cannot be generalized or standardized.
