Free tools
Checkers and generators on Uno Directory. No signup.
- Disposable email checkerPaste one address or a signup list and see whether the domain is a known disposable or throwaway domain.
- Meta tag checkerPaste page HTML and check the title, meta description, canonical, robots, viewport, and Open Graph tags.
- Email DNS checkerLook up MX, SPF, and DMARC for a domain, plus DKIM when you supply a selector.
- Email header analyzerPaste raw email headers and see each hop plus the SPF, DKIM, and DMARC results.
- DMARC record generatorChoose a policy and copy the _dmarc TXT host and value for your domain.
- SPF record generatorChoose the services that send mail and copy an SPF TXT record for your domain.