Prudent Money
Removing e-mail addresses from national marketing lists  E-mail

The Direct Marketing Association provides an opt-out list for e-mail marketing as well.

You can go directly to their site and register up to three e-mail addresses:

https://www.dmachoice.org/MPS/mps_consumer_description.php

DMA members must remove any e-mails from their prospecting lists that are located on these opt-out lists.