Compare software

MXToolbox vs MultiRBL: catalog facts
MXToolbox	MultiRBL
Freemium Lookups on the site are free to use, with paid plans offered alongside.	Free Free to use, with optional Bitcoin donations.
Web	Web
Many email and DNS checks in one place MX lookups query the authoritative server directly	Checks over 200 blacklists and whitelists Supports IPv4 and IPv6
Pages carry prompts for the paid service Each check runs separately rather than as one combined report	No help with removal requests Plain interface with lots of technical output
Web application	Web application
Closed source	Closed source
License not stated	License not stated
No account needed	No account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.