Diagnose email delivery, authentication, and security.
Look up MX records to see where a domain's email is delivered. Identifies email providers.
Check if a domain has a valid SPF record. Validates syntax and explains the policy.
Check DKIM records by probing common selectors. Verifies cryptographic email authentication.
Check if a domain has a DMARC policy. Validates the record, explains the policy, flags issues.
Generate a DMARC record for your domain. Configure policy, reporting, and alignment options.
Check BIMI (Brand Indicators for Message Identification) records. Verify your brand logo in email inboxes.
Test SMTP email server connectivity. Verify your mail server accepts connections and responds correctly.
Analyze email headers to trace the path of an email. Extract sender IP, authentication results, and routing.