Jeff King [off-list ref] wrote:
Repost of [ref] from a few weeks
ago (sorry, gmane is down so I can't generate a link).
I prefer we use links derived from Message-IDs anyways. This
prevents reliance on gmane article numbers being a central point
of failure:
http://marc.info/?i=$MESSAGE_ID
http://mid.gmane.org/$MESSAGE_ID
http://mid.mail-archive.com/$MESSAGE_ID
But the MESSAGE_ID above seems missing from mail-archive.com, in this case.
Maybe there's more lookup-by-Message-ID services out there...