Question : Automate mailman listserv procedures?

I have a website which has several mailman  listservs. When a user updates their email in a mysql based profile database, I wanted to automate updating their emails in the mailman listservs they are subscribed to...

Is there any way to do this with either webpage calls with GET strings, or emails to the list serve with specific tags in the subject or header

How do you get a list of all emails in a mailman listserv?

Answer : Automate mailman listserv procedures?

What exactly is Your problem? Mailman is capable of storing members to mysql db.
Refer http://loeki.tv/log/archives/81-Setting-up-Mailman-to-store-members-in-a-MySQL-database.html and google of course.