Allow group members to be removed from the lists
I never subscribed to the "cartones" group but they have been sending me several daily emails to my corporate email address (not even my Yahoo address). I have sent emails to "firstname.lastname@example.org" but there is an automatic response that my email address is not subscribed to the group. There is no way to unsubscribe from a group that I never asked to be part of.
ask a moderator to remove you, email@example.com
if that won't work, mark those messages as spam