The Free Email Deliverability Alternative to Mail-Tester

Looking for a Mail-Tester alternative? Korpo.pro offers free, instant email deliverability scoring with SPF, DKIM, DMARC, MX, MTA-STS, TLS-RPT, and BIMI checks — no email sending required.

Check Your Domain Free →

Why choose Korpo.pro over Mail-Tester?

✓No need to send a test email — check any domain instantly
✓7-point deliverability audit (vs Mail-Tester's 1 score)
✓Free unlimited checks (Mail-Tester limits free scans)
✓API access for automated monitoring
✓Detailed DNS record inspection and issue explanations
✓BIMI and MTA-STS support (Mail-Tester doesn't cover these)

7-Point Deliverability Audit

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SPF

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DKIM

✓

DMARC

✓

MX

✓

MTA-STS

✓

TLS-RPT

✓

BIMI

Try it now — free

Other Alternatives

MXToolbox Alternative DMARC Analyzer Alternative DMARC Report Alternative EasyDMARC Alternative Valimail Alternative DMARCLY Alternative Postmark DMARC Alternative Proofpoint Email Protection Alternative Barracuda Email Security Alternative Mimecast Alternative Google Postmaster Tools Alternative dmarcian Alternative PowerDMARC Alternative Trustifi Alternative