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parallaxintelligence.digital
Service ■ free checks live now

Something broke? Paste it and read it on your own machine.

postmortem.report is a set of free readers that run in your browser. Paste a bounce message, dcdiag or repadmin output, or a raw mail header, and get a reading you can paste back into the ticket. What you paste is not uploaded and there is no account. The engine is mailautopsy, our open-source engine compiled to WebAssembly.

run a free check mailautopsy on GitHub
01

What you can use today

Six tools, all in the browser. Open the page, paste, read, close the tab. What you paste stays on your machine.

Bounce readerPaste the whole non delivery report. You get the error named, who has to fix it, and the fix in one line.
dcdiag readerPaste what dcdiag or repadmin printed. You get the faults named in order, the exact lines lit up in your own text, and the command to run next.
Mail header readerPaste a raw header. SPF, DKIM, DMARC and alignment are read as one picture, with the bytes behind each finding.
Email safety checkPaste the whole original message. You get a plain read on the sender and the links. It never calls an email safe. This is mailautopsy compiled to WebAssembly.
Domain checkType a domain. Your browser reads the four public records that decide whether a stranger can send mail with your name on it.
Password checkChecks a password against a public list of breached passwords. Only the first five characters of a SHA-1 hash leave your device.

Or start from the error you searched for: one page per error, with the reader built in, for mail errors, dcdiag and repadmin readings, DMARC reports and mail headers.

Get mailautopsy

Signed release binaries (cosign keyless), go install, a Docker image build, and a WebAssembly build. It runs offline. github.com/Parallax-Intelligence-Partnership-LLC/mailautopsy

02

Why the answers hold up

Every finding cites evidenceNothing is asserted on vibes. Each finding points at the exact header, link or attachment it came from, so you can check the work yourself.
Deterministic replaySame input, same verdict, forever. Feed the engine the same email next year and it returns the same result byte for byte.
Unknown is a real answerWhen the evidence is thin it says insufficient evidence. It does not fill the gap with a guess.
No vanity scoreThere is no risk number out of 100. A score hides the reasoning. You get findings and the evidence behind them.
It never says safeThe best verdict is that nothing fired. That is not the same as safe, and we will not pretend it is.
Nothing is uploadedThe browser checks run on your device. We do not receive the email, so we cannot lose it.

The first real email through the engine came back “insufficient evidence.” That is the product working: it would rather tell you it does not know than guess on your behalf.

status · free checks live · mailautopsy v0.1.0 public, MIT licensed

03

Who this is for

Small businessesYou got an invoice email that feels off and you need a straight answer in the next two minutes. No login, no sales call, no uploading your mail to a stranger.
IT providersYou support those businesses. You need something you can point a client at, and an engine you can read the source of before you stake your name on its verdict.
04

In build: Mail Posture Watch

Not shipped yet. This is what we are building now, and we would rather say that plainly than sell you a screenshot.

What it will do

  1. Register domains. An IT provider adds the domains they look after.
  2. Re-read daily. SPF, DMARC, MX and MTA-STS get checked every day, not once at onboarding.
  3. Alert on change. When posture weakens or a record moves, you hear about it.
  4. Show the evidence. Before and after, the actual records, so the alert is something you can act on.

Paid, priced per domain. Built for MSPs and IT providers.

status · in build · not available yet

tell me when it ships

If a domain check turns up gaps you want to dig into further, Parallax Recon is a deeper-scan tool we are building for the same audience: it reads SPF, DKIM, DMARC, MTA-STS, and DNSSEC in one pass and is coming to iPhone.

The checks are free and they stay free. If a verdict turns up something you would rather have handled than fix yourself, that is the day job: Parallax Intelligence does the same email posture work for small businesses in Michigan.

Read the case study: postmortem.report, free checks that run on your machine.

visit postmortem.report back to the ledger