Free email & DNS tools
Check deliverability, authentication and addresses in seconds. No signup. When you need it in your product, the same checks are one API call away.
Domain & DNS checks
Email Domain Health Checker
Full deliverability report: MX, SPF, DKIM, DMARC, BIMI and PTR with an A-F grade.
DKIM Record Checker
Find and validate DKIM keys, including key length and revoked selectors.
SPF Record Checker
Validate SPF and count DNS lookups against the 10-lookup limit.
DMARC Record Checker
Read your DMARC policy, reporting and enforcement level.
MX Record Lookup
See a domain's mail servers, priorities and email provider.
BIMI Record Checker
Validate BIMI and the DMARC policy it requires to show your logo.
Reverse DNS (PTR) Lookup
Check an IP's PTR record and whether it's forward-confirmed.
DNS Records Lookup
A, AAAA, MX, NS, TXT, CNAME, SOA and CAA records in one view.
Email address checks
Email Verifier
Check if an email address exists and will accept mail.
Disposable Email Checker
Detect throwaway and temporary email addresses.
Free & Role Email Checker
Detect free-provider (Gmail, Yahoo) and role (info@, sales@) addresses.
Email Syntax Checker
Validate email format and catch typos like gmial.com.
Run these checks from your code
Verify addresses at signup, clean lists and read SPF/DKIM/DMARC with one API call. 100 free verifications a month, test keys that cost nothing, and the API on every plan.