Often “spam unsubscribe” and “address services” pretend to be "anti-spam" site claiming to be able to remove your address from spammers' lists, for a fee. Spam 'Remove-You' Services are at best a scam and at worst a 'live address' confirmation system for the spammer. Some pretend to be affiliated with government consumer protection agencies or antispam organizations. None are, they are all scams designed to separate you from your money.
For-a-fee Address Remove Lists are operated by conmen. Any system that wants money in exchange for 'removing' your address from spammers' lists, is a scam, you should report it to your State Attorney General's office.
No legitimate marketing firm will ever operate a Remove List or use a 3rd party Remove List, because no legitimate marketing firm sends Unsolicited Bulk Email in the first place. Also, no spammer would ever use a “global” or “unified remove list” because they do not believe that anyone would want to remove their list - their junk is different apparently!
Below is a list of known “spam unsubscribe” scams:
theremovelist.co.nz is run by a known ROKSO-listed spammer, Brendan Battles, AKA 'Image Marketing Group' and is a scam to collect email addresses of naive internet users.
opt-out-tech.com is a scam run by fraudsters. The scam charges $18.95 to pretend to "opt" naive internet users out of receiving spam.
nationaldonotemail.com is a scam to collect email addresses on the pretence of removing them from other spammers 'remove lists'. In fact nationaldonotemail.com is not interested in what the user doesn't want, only in getting the address.
UnsubscribeNow.org is a protection racket scam run by spammers, UnsubscribeNow.org attempts to fleece naive Internet users $21.95 by sending out large volumes of spam to advertize that by paying $21.95 you won't get more spam from the likes of UnsubscribeNow.org
Remove.org is a scam run by spammers. Remove.org paints itself in the US flag with plenty of references to "laws" to sucker the naive into parting with their money.
GlobalRemoval.com calling itself "THE DO NOT SPAM LIST" and pretending affiliation with various agencies, GlobalRemoval.com is a scam which tries to fleece naive users $5 per address to 'remove' them from spammers lists.
unsubscribenet.com is a scam run by spammers to collect your email address.
nationalantispamregistry.com is a scam run by spammers to fleece naive users $5 per address for doing nothing (pretends to "do something" to stop your spam).
DMA/ANA The Association of National Advertising Managers (AN acquired The (American) Data & Marketing Association ("The DMA") in 2018. They are not an anti-spam group but pro direct marketing. There mission is to advance the interests of junk email senders
Direct Marketing Association ("The DMA") is a pro-spam group, not an anti-spam group. The DMA's mission is to advance the interests of junk email senders - learn more here.