Digest Footer
(optional) If specified, appends this text to the end of every nightly digest and index message from this list.
By default, when you create a mailing list, this footer is added:
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You are currently subscribed to %%list.name%% as:%%emailaddr%%
To unsubscribe send a blank email to %%email.unsub%%
This footer uses the mail merge fields to allow failsafe unsubscribing. See "How can I use the Mail merge feature?".
Of course, you can change this footer to be anything you like, or remove it completely.