# Free Email Tools - SPF, DMARC, and Amazon SES Checks

Source: https://wraps.dev/tools

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# 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 →](https://wraps.dev/tools/spf-builder)

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.

### Stuck in the SES sandbox

Build the production access request that answers the four questions the AWS form never asks — or paste a denial and find out which one you missed.

[Open Request Builder](https://wraps.dev/tools/ses-production-access)

Not submitted yet? Work through the [16-point pre-request checklist](https://wraps.dev/blog/ses-sandbox-guide#pre-request-checklist) first.

### Calculate your AWS SES costs

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

[Open Calculator](https://wraps.dev/tools/ses-calculator)

Want to learn more about email authentication?

[Read: Why DMARC Is Broken](https://wraps.dev/blog/your-dmarc-policy-is-useless)