Free toolWho really sent
Who really sent
this email?
Paste the headers to see the route it took, its SPF, DKIM and DMARC results in plain English, and anything that looks off.
No account required to use this tool.
More free domain tools
WHOIS lookup
See a domain's registrar, registration and expiry dates, status, and nameservers, live from RDAP.
OpenDNS lookup
Check A, AAAA, CNAME, MX, TXT, NS, SOA, and CAA records for any domain in real time.
OpenDNS propagation checker
See if a DNS change has gone live: what the domain's nameservers and 19 public resolvers in 10 countries return right now.
OpenKeep your own domains' email in order.
Lemon Domains keeps every domain in one list across registrars and watches each one's SPF, DMARC and mail setup for changes.