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The deep audit One email · Six checks · Under 5 seconds

Full Audit

Drop in any email address, or a domain. We run all the deliverability checks at once: domain DNS authentication, blacklist sweep across 12 RBLs, CRM platform detection, syntax validation, and a deliverability score. One report. Every angle.

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supports both, paste an email or just a domain
+What we check

Six checks. One verdict.
No tab-switching.

/ 01. Email syntax
Twelve syntax rules
RFC 5322 syntax: single @, valid local part, valid TLD, total length cap. Catches typos and malformed addresses before they get further.
/ 02. Domain DNS
SPF · DKIM · DMARC
Pulls the live records, audits the SPF chain (RFC 7208 ten-lookup limit), validates DMARC policy, probes common DKIM selectors.
/ 03. Blacklist sweep
14 RBLs
Categorized: 7 sender-reputation lists, 5 content/URL lists, 2 policy signals. Honest verdict, not noise, flags what actually impacts deliverability.
/ 04. CRM detection
Auto-detection
Auto-identifies HubSpot, Salesforce, Mailchimp, Zoho, Pipedrive, ActiveCampaign, and more from your published SPF chain.
/ 05. SMTP handshake
Live verification
Connects to the receiving mail server and verifies the address actually accepts mail, catches typos, dead inboxes, and catch-alls. Pro feature.
/ 06. Deliverability score
A–F grade
Weighted across all five upstream checks. 100/100 means safe to send today. Below 80 means something will quietly hurt your inbox rate.
+Six checks · one report

Stop tab-switching.
Audit it once.

Most tools make you run domain check, then blacklist check, then DKIM probe, then a separate syntax validator. We run all of it on a single email, in parallel, and hand back one verdict.