If you’re faced with the challenging task of exporting a mailman subscribers list through the mailman web interface (e.g. because you don’t have SSH access to the server) look no further, there’s a nice Python-based solution for this.

Download http://msapiro.net/mailman-subscribers.py onto your Python-enabled system and run:

./mailman-subscribers.py -f <host_URL_without_http://> <listname> <password>