The Free Mailgun Alternative for Email Deliverability Monitoring

Korpo.pro is the free Mailgun alternative for email authentication: check SPF, DKIM, DMARC, MX, MTA-STS, TLS-RPT, and BIMI for any domain — no Mailgun plan needed.

Check Your Domain Free →

Why choose Korpo.pro over Mailgun?

✓Free with no usage-based billing
✓7-protocol audit vs Mailguns limited DNS verification
✓DMARC policy analysis and enforcement guidance
✓MTA-STS and BIMI checks Mailgun doesnt offer
✓Provider-independent — check domains using any ESP
✓Instant results with no dashboard login required

7-Point Deliverability Audit

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SPF

✓

DKIM

✓

DMARC

✓

MX

✓

MTA-STS

✓

TLS-RPT

✓

BIMI

Try it now — free

Other Alternatives

Mail-Tester Alternative MXToolbox Alternative DMARC Analyzer Alternative DMARC Report Alternative EasyDMARC Alternative Valimail Alternative DMARCLY Alternative Postmark DMARC Alternative Proofpoint Alternative Barracuda Alternative Mimecast Alternative Google Postmaster Tools Alternative dmarcian Alternative PowerDMARC Alternative Trustifi Alternative Red Sift Alternative Agari Alternative ZeroBounce Alternative Mailchimp Alternative SendGrid Alternative Mailgun Alternative IntoDMARC Alternative Validity 250ok Alternative Bouncer Alternative Mailtrap Alternative