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correct
.email
Tools
Authentication
SPF checker
Syntax, includes and the 10-lookup limit
DKIM checker
The public key behind a selector
DMARC checker
Policy, reports and RFC 9989 rules
DMARC report analyzer
Senders and alignment from rua reports
BIMI checker
Logo, mark certificate and DMARC
Delivery and transport
MX lookup
Mail servers, priorities and addresses
SMTP and TLS test
STARTTLS, TLS version and certificate
MTA-STS checker
Policy file, certificate and MX coverage
TLS-RPT checker
Where senders report TLS failures
Reverse DNS lookup
PTR record and forward confirmation
IP blocklist checker
Is a sending IP on a blocklist?
DNS propagation checker
Public resolvers vs. your name servers
Private, in your browser
Email header analyzer
Delivery path and authentication verdicts
Email syntax validator
Address format, typos and bulk lists
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Delivery troubleshooter
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Delivery troubleshooter
Guided checks from symptom to cause
Authentication
SPF checker
Syntax, includes and the 10-lookup limit
DKIM checker
The public key behind a selector
DMARC checker
Policy, reports and RFC 9989 rules
DMARC report analyzer
Senders and alignment from rua reports
BIMI checker
Logo, mark certificate and DMARC
Delivery and transport
MX lookup
Mail servers, priorities and addresses
SMTP and TLS test
STARTTLS, TLS version and certificate
MTA-STS checker
Policy file, certificate and MX coverage
TLS-RPT checker
Where senders report TLS failures
Reverse DNS lookup
PTR record and forward confirmation
IP blocklist checker
Is a sending IP on a blocklist?
DNS propagation checker
Public resolvers vs. your name servers
Private, in your browser
Email header analyzer
Delivery path and authentication verdicts
Email syntax validator
Address format, typos and bulk lists
All tools
Guides
About
Account
Polski
Theme
System
Light
Dark
…