On Mon, Dec 21, 2015 at 1:58 PM, Ben Finney <ben+pyt...@benfinney.id.au> wrote: > Ian Kelly <ian.g.ke...@gmail.com> writes: >> This isn't just a Usenet group; it's also a mailing list, and many >> MUAs rely on the Subject header for proper threading. > > If such MUAs do that, they're misinterpreting the Subject field. Other > fields are available with the explicit meaning of relating messages to > each other regardless of what they discuss. > > If the correct fields are being mangled, then the correct place to apply > pressure is on those who can fix that error. Let's not overload the > Subject field to make up the lack.
It might just be Gmail. http://webapps.stackexchange.com/questions/965/how-does-gmail-decide-to-thread-email-messages I can't specifically recall if I've used any MUA other than Gmail that even attempts threading email messages. -- https://mail.python.org/mailman/listinfo/python-list
