Accept-all (Catch-all) Emails
Accept-all is also known as a “catch-all”. This is a domain-wide setting where all emails on this domain will be described as an “accept all”. There is no reliable way to determine whether this email is valid or invalid.
A catch-all domain in simple terms means the server of that company will catch any email sent to that domain, even a non-existent address, and store it in a section called the catch-all. When this happens, you have no clue if it’s a legitimate email address or not.
Catch all mail servers will accept all emails even if the email address does not exist. If an email verification company claims that they can verify the catch-all or accept-all emails. This means either they are lying or they are matching the accept-all emails against some non-legit database. It’s because big companies like yahoo, AOL are never going to sell their database to anyone, that’s why the companies claiming to verify accept-all emails, are openly lying to their users. (Yahoo gives only accept-all email results after the validation process)
Spam Trap Emails
Spam traps are a type of fraud management tool, used by primary Internet Service Providers (ISPs) and blacklist providers to identify spammers so they can block emails from them. A spam trap looks like a real email address, but it doesn’t belong to a real user and can’t be used for any kind of communication.
Can SPAM traps be removed by email verifiers?
No, spam traps are one of the most crucial value assets for Internet Service Providers. They will never publish, share, leak, or sell the list of their spam trap list. If they did, it will not be used for performance tracking anymore.
Do you believe in fairy tales?
If you do, that’s fine. But be aware, if an email verifier offers you to remove a spam trap list from your email lists, they are tricking you. Gmail, Outlook, Hotmail, and any other ISP’s are fighting against spam. Spam traps are their best tool to identify a spammer. Believe me, none of these ISP’s went to a little “company” somewhere in the world and handed them their most valuable lists. If SPAM traps were publicly available, they wouldn’t work anymore. No Internet Service Provider will ever share their spam trap list with any email verifier, because it is against their business principles.