Free Tool

Email Deliverability Checker

Check your domain's email authentication setup. We analyze SPF, DKIM, DMARC, and MX records to help you improve deliverability.

What is SPF?

Sender Policy Framework (SPF) specifies which mail servers are authorized to send email on behalf of your domain. Build your SPF record →

What is DKIM?

DomainKeys Identified Mail (DKIM) adds a digital signature to emails, allowing receivers to verify the message hasn't been altered.

What is DMARC?

Domain-based Message Authentication (DMARC) tells receivers how to handle emails that fail SPF or DKIM checks.

See exactly what you'll pay for email sending plus the full infrastructure — EventBridge, Lambda, SQS, and DynamoDB.

Want to learn more about email authentication?