/usr/lib/courier/couriermlm/unsub2.tmpl is in courier-mlm 0.76.3-5+deb9u1.
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1 2 3 4 5 6 7 8 9 10 11 | Subject: Subscription removal confirmation.
Mime-Version: 1.0
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: 8bit
Hello, this is the Courier mailing list manager. I manage the mailing
list <####>.
Your unsubscription request has been succesfully processed.
Your confirmation:
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