Check the DNS records behind your email
Type a domain and see whether its email DNS is set up correctly, with every finding explained in plain words and the steps to fix it. No sign-up, no limits for normal use.
SPF Record Checker
Look up a domain's SPF record, count its DNS lookups against the limit of 10, and see every include it pulls in.
Open the checker -> DMARCDMARC Record Checker
Look up a domain's DMARC policy, see whether it only monitors or really protects, and where the reports go.
Open the checker ->How these tools work
Each checker asks public DNS resolvers (1.1.1.1 and 8.8.8.8) for the record, reads it the way a receiving mail server would, and reports what it finds. Results are cached for five minutes, so a link you share shows the same answer to everyone. We log the tool, the status and the timing of each run, never the domain.
The checks are provider-neutral: a domain that sends through Google Workspace, Microsoft 365, Amazon SES, Ackuna or anything else is judged by the same standards (RFC 7208 for SPF, RFC 7489 for DMARC). DKIM and MX lookups are next.
Start sending in minutes
All three services free every month: 2,500 newsletter, 3,000 relay and 3,000 Agent Mail emails. No credit card required - upgrade only when your volume does.