[Mailman-Users] Automatic subscription based on e-mail subject

[Carl Zwanzig]

To analogize the entire thread-

Mailman is a high quality precision-ground Phillips screwdriver, but it does 
not work on square-drive (Robertson) screws nor open paint cans. The OP is 
asking that it be modified so that it does; the developers and other users 
are discussing why this is not a good idea.

BTW, I'm not aware of any mailing list managers that will automatically add 
a subscriber based on a single message to the list, if nothing else, there 
should always be an opt-in confirmation (prevents false additions and 
backscatter from forged messages).

later,

z!