OPTools OP
🌐

Email Deliverability Checker

Check email deliverability by validating MX, SPF, DKIM, and DMARC records.

DNSemaildeliverabilitycheckermx🔒 Browser-only

📋 How to use Email Deliverability Checker

  1. 1Enter domain
  2. 2Run comprehensive email deliverability checks
  3. 3View MX, SPF, DKIM, DMARC validation results

Try it now

Check email deliverability by verifying DNS records (MX, SPF, DKIM, DMARC). Note: Browser cannot test SMTP connections.

Examples

Check company.com deliverability

Input: "company.com"
Output: "✓ MX records, ✓ SPF, ✓ DKIM, ✓ DMARC"

Frequently Asked Questions

Why do all these records matter?▾

MX = receives mail, SPF = authorized senders, DKIM = verifies signatures, DMARC = enforcement policy.

Can I test SMTP from browser?▾

No. Use specialized tools like MailTester or consult your mail provider for full SMTP testing.

Related Tools

🌐

MX Validator

Check MX records to see which mail servers handle email for your domain.

🌐

SPF Validator

Check SPF records and view all authorized mail servers for your domain.

🌐

DKIM Validator

Validate DKIM records for email authentication. Check public keys and key length.