I am looking to find email signup locations that would place your email on a regular newsletter and/or offer mailing list for competitive research. A cousin site to the major brands that would take your email and put you on the brands/affiliate mailing list.
Wondering if there are any tools out there to locate active signup forms. A tool similar to "whatrunswhere" or "moat" would be fantastic, some sort of signup location aggregator.
I peruse offervault.com fairly regularly, but wondering if there are any better tools out there.