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MXToolbox vs intoDNS: catalog facts
MXToolbox	intoDNS
Freemium Lookups on the site are free to use, with paid plans offered alongside.	Free Free to use in the browser.
Web	Web
Many email and DNS checks in one place MX lookups query the authoritative server directly	Single report covering DNS and mail servers Gives fix suggestions with links to the protocol documentation
Pages carry prompts for the paid service Each check runs separately rather than as one combined report	Checks one domain at a time with no monitoring No DNSSEC visualization or propagation view
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.