The Email Stack Scan a domain

Tools and reports

10 live checks and five reports, all read from public DNS or run in your browser. No account.

Reports

Full reads that combine many checks into one verdict, and tell you what to change.

Live

Domain Report

Enter any domain and get a full read of its email setup, from public DNS alone.

  • Eight checks scored to 100: SPF, DKIM, DMARC, MX, MTA-STS, TLS-RPT, BIMI and DNSSEC, each with the record and a plain-English reason
  • Every tool visible in DNS with the exact record that revealed it, and a Google, Yahoo and Microsoft scorecard
  • A fix list with the exact records to publish, its own shareable address, and a PDF

For: Everyone who sends from a domain

Run it →
Live

EML Viewer & Message Report

Open any .eml or .mbox in your browser: the message, every header, and a report on who really sent it and whether it is safe.

  • The rendered message with scripts and tracking images blocked, attachments with safety flags, every header decoded
  • DKIM re-verified against the key in DNS, alignment against the live DMARC record, the sending IP checked against blocklists
  • Which tool sent it, mismatched and tracking links, a legitimacy verdict, and a PDF. The file never leaves your browser

For: Marketers checking a send, IT checking a report, anyone asking "is this real?"

Run it →
Live

DMARC Report Reader

Drag in DMARC aggregate reports and read them like a person, not a parser.

  • Each sending source named as a tool: "12,400 emails from Klaviyo, all passing"
  • Unknown sources flagged, whether spoofing or a tool someone forgot about
  • Pass and fail rates over time, and a step-by-step route to p=reject

For: Anyone who turned on DMARC and cannot read what it sends back

Run it →
Live

Inbox Mix Report

Upload a prospect list and see where it will land before you send.

  • The split by mailbox provider: Google Workspace, Microsoft 365, Proofpoint, Mimecast
  • Dead domains with no mail server, which are guaranteed bounces
  • Sending advice based on the mix, computed without the list leaving your browser

For: Cold email and sales teams

Run it →
Live

New Domain Readiness

Enter a newly bought sending domain and get a pre-launch verdict.

  • Domain age, authentication, MX, a website and a redirect to the main domain
  • A verdict: ready to send, or exactly what to fix first
  • A suggested warmup schedule for the first weeks

For: Outbound teams setting up new domains

Run it →

Quick checks

One question, one answer. Each check is a short link on theemailstack.com.

Authentication

Prove your mail really comes from you.

Deliverability

Find out where your mail lands, and why.

Discovery

See what any domain is running.