I sent an email to people that bought stuff from me before - to tell them about the kickstarter. I felt having an unsubscribe message was good. But since they are not on permies, then i can't use the permies unsubscribe stuff. So I made the email from me and wrote in the email:
to unsubscribe, reply to this email and say "the voices in my head command you to unsubscribe me." Or something similar. Maybe you can make it rhyme?
Seven replies of "the voices in my head command you to unsubscribe me."
One feeble attempt at rhyming.