We help businesses find and fix the technical problems that silently send their email to spam.
Email is still how businesses send invoices, password resets, order confirmations and newsletters. Yet a surprising amount of legitimate mail never reaches the inbox — often because of a missing DNS record, a misconfigured SPF include or an IP that ended up on a blacklist.
Mailbox providers like Gmail, Yahoo and Outlook now require proper authentication from senders, and unauthenticated mail is increasingly rejected outright. The standards behind this — SPF, DKIM and DMARC — are powerful, but they are also cryptic, and existing tools tend to show raw records without explaining what is wrong or how to fix it.
The Email Deliverability Checker turns all of that into a single, easy-to-read report: a score, a clear status for each check and step-by-step recommendations you can hand to whoever manages your DNS.
Validates your SPF record, counts DNS lookups against the limit of 10 and flags risky mechanisms.
Probes common selectors used by popular email providers and verifies the published public keys.
Reads your policy, subdomain policy and reporting addresses and explains what they mean in practice.
Checks your mail server IPs and your domain against widely used IP and domain blocklists.
Verifies MX records, reverse DNS and other basics that mailbox providers expect from a legitimate sender.
You enter a domain — nothing else is needed.
We query its public DNS records over encrypted DNS-over-HTTPS and check the relevant IPs and the domain against blocklists, all in parallel.
Each component is scored and combined into an overall grade from A to F.
You get a report with a prioritized list of fixes, which you can revisit later from your dashboard history.
A red mark is only useful if you know how to fix it. Every issue comes with a concrete recommendation, prioritized by impact.
Your score is built from the same components you see in the report — SPF, DKIM, DMARC, blacklists and infrastructure. No black box.
We only look at what is already public: DNS records and blocklist status. We never need access to your mailbox, your email content or your DNS account.
Enter a domain, get a complete report in seconds. No installation, and your first checks are free.
Run a free check or get in touch if you have questions.