Free Email Deliverability Audit
SPF · DKIM · DMARC · Blacklists
Drop your domain, you'll receive a full deliverability PDF (DNS records, blacklist status, sender reputation, plain-language fixes) within 24 hours. No obligation, no upsell.
- SPF / DKIM / DMARC validation with alignment + lookup-count check
- Major blacklist scan: Spamhaus, Barracuda, Sorbs, SURBL, Invaluement
- Sender-reputation review (Postmaster, SNDS) + MX / reverse-DNS / BIMI / MTA-STS
- Plain-language remediation steps you can apply without me
Every check, every layer
A full inventory of what receivers see when your domain sends mail, written so a non-specialist can act on it.
SPF
Record syntax, lookup-count budget (10-DNS-lookup limit), `+all` / `~all` / `-all` policy review, alignment with the From header.
DKIM
Selector discovery, key length (RSA 1024 vs 2048), key rotation status, signature alignment with the visible sender domain.
DMARC
Policy (none / quarantine / reject), percentage rollout, aggregate (`rua`) and forensic (`ruf`) reporting destinations, subdomain policy.
Blacklists
Spamhaus (SBL, XBL, PBL, DBL, ZEN), Barracuda, Sorbs, SURBL, Invaluement, domain & sending-IP coverage with delisting links.
Sender reputation
Google Postmaster signals (where verifiable), Microsoft SNDS readiness, common reputation flags. No invented "sender score", only what receivers actually publish.
MX & reverse DNS
MX record health, PTR record matching the HELO string, common misconfigurations that quietly drop legitimate mail.
BIMI
Whether your DMARC posture is strong enough to qualify for BIMI, VMC requirements, and what your logo would need to look like.
MTA-STS & TLS-RPT
In-transit encryption posture, MTA-STS policy file, TLS-RPT reporting endpoint configuration.
Plain-language fixes
Each finding ranked by impact (high / medium / low) with a concrete remediation step a competent admin can apply without further consulting.
The cost of poor deliverability is silent
If even a quiet share of your transactional and marketing email lands in spam, the impact is rarely visible in your stats, bounces stay low, the dashboard stays green, but customers stop replying, password-reset emails get blamed on "the system", and onboarding sequences silently underperform.
Most fixes are configuration-only: a corrected SPF record, a properly aligned DKIM signature, a DMARC policy that reports rather than rejects until you trust the data. None of them require new infrastructure or vendor change. They just require knowing what to look at and in what order.
That's the audit. A flat, opinionated read of your domain's current state, ranked by what to fix first.
Three steps, one PDF
- 01
Enter your domain
Email + domain (no protocol, no path, just example.com). Optional name. That's the entire form.
- 02
Automated audit runs
Public DNS records and blacklist registries are queried; the script compiles findings, ranks them by impact, and writes the PDF.
- 03
PDF in your inbox
Within 24 hours. If it doesn't show up, peek in spam (a small irony when auditing deliverability) and add the sender to your contacts.