Free Email Deliverability Test
Check your domain's SPF, DKIM, DMARC & MX records in seconds. Get a deliverability score and exact fixes before your next cold campaign.
What this deliverability checker tests
MX records
Confirms the domain has mail servers. Domains without MX can't receive replies and get distrusted as senders.
SPF record
Lists which servers may send for your domain. Missing or duplicate SPF records fail authentication instantly.
DKIM key
Cryptographic signature proving mail wasn't tampered with. Scanned across 10 common selectors (google, default, selector1 and more).
DMARC policy
The policy that ties SPF and DKIM together. Required by Gmail and Yahoo bulk-sender rules since 2024.
Why test email deliverability before sending?
Since Google and Yahoo's bulk-sender rules, unauthenticated email is dead on arrival. A missing SPF, DKIM or DMARC record means your cold campaigns get rejected or spam-foldered before a human ever sees them, no matter how good the copy is.
Fix the records this test flags, then protect your score: verify every address with the free email verifier, warm up new inboxes with automated warm-up and follow the deliverability guide.
If this test is failing on a domain you only registered recently, records are not the whole story: a new domain also has no sending history, and authentication alone will not carry a cold campaign in week one. That is the gap pre-warmed mailboxes close, arriving with SPF, DKIM and DMARC already published and four to six weeks of warm-up behind them.
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