On Sat, Jun 6, 2020 at 2:17 PM Lassi Kortela <xxxxxx@lassi.io> wrote:
 
Arthur can probably get the SRFI email archives in mbox or maildir
format. It should be reasonably easy to write a Scheme script to turn
them into HTML pages with a Discourse-forum-type presentation (i.e. show
a flat list of the messages in each thread sorted by date, but add links
that jump back to the parent message when the parent is further up). Or
any other presentation that is interesting.

I can, but not in real time.  That's one of the tradeoffs I made when contracting out our mail hosting to Simplelists.  They've been wonderful, but we do lose some flexibility by using them.  But when I took over as editor, Michael Sperber told me that he had been spending lots and lots of time fighting spammers.  I decided that I was happy to do lots of SRFI-related work, but that I would contract out fighting spam.  And mail server administration.

On the other hand, someone could subscribe a program to all of our mailing lists and use that to get a real-time feed of incoming messages.  And I could provide a backup of existing messages to seed the program's database of messages.
 
> PS1 Maybe you know how to do it: Sometimes I want to reply to a
> message I can read on the list server but which I do not have
> (anymore) stored as an email. Do you know a simple way to emulate a
> reply-to?

I've been wanting the same functionality. No idea if it's possible.

It's certainly possible, but not simply, and not without access to the email headers, which aren't displayed in our web archive.  Sorry.