I signed up once upon a time to receive list emails for the Zend Framework. I apparently never needed an account to do this since no email I've ever had works when I try to retrieve a password.
I no longer work with the Zend Framework and wish to unsubscribe from the lists but do not know how.
If the email comes from Nabble, you will see a footer that explains how to unsubscribe. If the email comes from the mailing list server (not Nabble), then you might have to visit the mailing list website and find the unsubscribe option from there.