Messages delivered by Mailman should link to the web archive of the specific messages in the footer, so that it is easier to refer others to them in discussions.
This is not possible with Mailman 2.1, but based on http://www.mail-archive.com/mailman-users%40python.org/msg60562.html, it seems like it will be possible with Mailman 3. This enhancement should be implemented when WMF deploys Mailman 3 (after it has been released).
Version: unspecified
Severity: enhancement