Email Deliverability Test
See whether your domain is set up to reach the inbox, with a score and a prioritised fix list.
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What this tool checks
- MX records and null MX
- SPF validity and DNS lookup count
- DKIM selectors that exist
- DMARC policy and reporting
- MTA-STS and TLS-RPT
- Reverse DNS of mail servers
- Blacklist status of mail server IPs
How to read the result
The score weighs authentication most heavily. Work through the recommendations from the top; each is ordered by impact.
Terms explained
Frequently asked questions
Why is DKIM not found?
DKIM uses a selector chosen by your email provider. We test common ones; a custom selector can be missed.
What is a good DMARC policy?
Start with p=none and reports, then move to quarantine and reject once all legitimate senders pass. See the SPF, DKIM and DMARC guide.
Does this send a test email?
No. It checks DNS and public data only.