Bardzo ważne narzędzie, wiedza dla infobrokerów i archiwistów cyfrowych.

"

Using our RBL check tool you can easily verify whether your IP/domain is being blocked by any of 103 supported by us blacklists. Blacklists are often being used to reduce the amount of received spam. If your IP/domain is listed as "BLACKLISTED" - that means that mails sent from that address will be marked as spam on servers using this RBL."

https://tinycp.com/page/show/rbl-check

(dostęp z 24.07.2023)

 https://mxtoolbox.com/blacklists.aspx

(dostęp z 24.07.2023)