Email Deliverability Checker

What is email deliverability?

Email deliverability is whether mail you send actually reaches the inbox — not the spam folder, and not bounced outright. It depends on three DNS records working together (SPF, DKIM, DMARC), a correctly configured mail-routing setup (MX), and the sending infrastructure's reputation.

SPF

SPF (Sender Policy Framework) publishes which mail servers are authorized to send email for your domain. Without it, any server can claim to send mail as you, and legitimate mail is harder for receivers to trust.

DKIM

DKIM (DomainKeys Identified Mail) lets a receiving server cryptographically verify a message wasn't altered in transit, using a public key published in DNS at a provider-specific "selector".

DMARC

DMARC ties SPF and DKIM together with a policy telling receivers what to do when a message fails both, and provides reporting so you can see who is sending mail using your domain.

MX

MX (Mail Exchange) records tell other mail systems where to deliver mail addressed to your domain — a separate concern from whether you can send mail out.

This tool performs real DNS lookups against your domain. DKIM cannot be checked without knowing your selector — see the tool above. Reputation and inbox-placement guarantees are never claimed; see each result's "confidence" level for how certain a finding is.