Email tools
MX, SPF, DKIM, DMARC, SMTP and message headers.
MX, SPF, DKIM, DMARC, SMTP and message headers.
SPF record builder
Build a valid SPF record from the services you use.
DMARC record builder
Build a DMARC record with the right policy, reporting and alignment.
MTA-STS and TLS-RPT builder
Make senders use TLS to reach your mail servers, with reports when they cannot.
BIMI record builder
Show your logo in the inbox once DMARC is at enforcement.
MX lookup
Which servers receive mail for a domain, and are they healthy?
SPF checker
Validate SPF and count the DNS lookups before receivers do.
DKIM checker
Find published DKIM keys and check their strength.
DMARC checker
Policy, reporting and alignment in one view.
Email setup check
MX, SPF, DKIM, DMARC, MTA-STS and a live SMTP test, with a spoofability verdict.
Header decoder
Paste a message header and see the route, delays and authentication results.
DMARC report analyser
Upload aggregate reports and see who sends as your domain and what passes.
DMARC report monitoring
Send your aggregate reports to us and read a dashboard instead of XML.
Open relay test
Does your mail server accept mail for other domains? Owners only.
Email address checker
Is this address real? Syntax, mail servers, disposable and role checks, plus a live mailbox probe.