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Email Deliverability Test

Send to our address and get a scored report.

How it works

Email deliverability test: how likely is mail from this domain to reach the inbox?

Enter the domain you send from and we run the checks mailbox providers run: MX presence and reachability, SPF validity and lookup count, DKIM keys at nine common selectors, DMARC policy and reporting, plus a reverse-DNS check on your mail server IPs. The result is a 0–100 deliverability score weighted the way Gmail and Yahoo weight their sender requirements, with every point lost explained. No message needs to be sent; everything is read from live public DNS.

Results appear here after you click Test deliverability.

How this works

1
Read the sending domain's DNS
MX, SPF, DMARC and DKIM (your selector plus nine common ones) are fetched in parallel over DNS-over-HTTPS.
2
Check mail server reverse DNS
The first IP of up to three MX hosts is looked up for a PTR record, as receivers do during the SMTP handshake.
3
Weight and score
MX 15, SPF 25, DKIM 30, DMARC 25 and reverse DNS 5 combine into a 0–100 score with each lost point explained.

Frequently asked questions

How is the deliverability score calculated?: MX is worth 15 points, SPF 25, DKIM 30, DMARC 25 and reverse DNS on your mail IPs 5. Within each, points are deducted for invalid syntax, weak policies, missing reports or weak keys, mirroring how Gmail and Yahoo evaluate senders.
Why does DKIM carry the most weight?: DKIM is the only authentication that survives forwarding and mailing lists, and DMARC needs it to align for forwarded mail to pass. Gmail and Yahoo require DKIM for bulk senders and it is where most domains lose points.
Do I need to send a test email?: Not for this check: everything is read from public DNS. A sent-message test additionally reveals content and reputation issues; MailShrine customers get per-campaign inbox placement reports inside the app.
My score is 100 but mail still goes to spam. Why?: Authentication is the entry ticket, not the whole game. New domains have no reputation, purchased lists generate complaints and spammy content triggers filters. Warm up gradually and watch DMARC reports and bounce rates.
What are the Gmail and Yahoo sender requirements?: Since 2024, senders of 5,000+ messages a day to Gmail or Yahoo must have SPF and DKIM, DMARC (at least p=none), aligned From domains, one-click unsubscribe and a spam rate under 0.3%. All senders need SPF or DKIM and valid reverse DNS.

Every MailShrine domain includes WHOIS privacy, transfer lock, Anycast DNS with DNSSEC and two business mailboxes.