Laura of Word to the Wise has an excellent post up on How not to handle unsubscribes regarding her experience trying (and failing) to be unsubscribed from Paypal’s lists.

The only thing she left out was this quote:

For example, DMA argued that ‘‘tracking by account information also makes it easier to honor opt-out requests for customers regardless of what they change their email address to.’’ The Commission does not find this argument persuasive, because, as the Commission stated in the NPRM, ‘‘according to CAN-SPAM, opt-out requests are specific to a recipient’s email address, not his or her name,’’ and, in this case, certainly not to his or her account information.

Demanding a link to some account is a big no-no under CAN-SPAM.

Sender beware.