Email authentication audit

Your emails are
being rejected.
You just don't know it.

Gmail and Outlook now block unauthenticated email outright. InboxRescue scans your domain's public DNS from the outside, finds the exact problems, and fixes them — flat fee, no subscriptions.

~90% of domains lack full DMARC protection
40–70% of unauthenticated email lands in spam or nowhere
48hrs from scan to fully fixed domain
InboxRescue Scan

Email authentication isn't optional anymore.
It's the difference between being heard and being ignored.

Gmail and Outlook reject you outright

Since February 2024, Google and Yahoo reject unauthenticated bulk email. Microsoft followed in August 2024. No spam folder — just gone. Your receipts, password resets, and invoices never arrive.

Your team can't diagnose it alone

SPF lookups, DKIM selectors, DMARC alignment — the vocabulary alone is enough to give up. Most businesses have no one on staff who can safely touch DNS and not break their email in the process.

Most tools show problems, don't fix them

Monitoring dashboards tell you something is wrong. Nobody hands you a wrench. You get a report, then you're back to Googling DNS syntax and hoping you don't misconfigure something worse.

From broken to protected in three steps.

01

Scan from the outside

We query your domain's public DNS records without needing any credentials. No setup, no access requests. We see exactly what Gmail, Outlook, and Yahoo see when your emails arrive.

DNS queries only No login required Instant results
02

Get a plain-English diagnosis

No DNS jargon. We tell you which records are wrong, what's causing your emails to fail authentication, and what the risk is — missing invoices, rejected signups, domain spoofing.

SPF / DKIM / DMARC MX alignment Risk assessment
03

We fix it. You stay hands-off.

We apply the remediation sprint — update DNS records, validate alignment, verify against live mail servers. Your team doesn't touch a thing. You get a clean, authenticated domain in 48–72 hours.

We apply changes Live validation 48–72hr sprint

We see what your email provider sees.

Most authentication tools require you to connect your domain, authorize an app, and wait for data to accumulate. InboxRescue reads public DNS — the same data that determines whether Gmail accepts your mail or rejects it. The scan is immediate. The diagnosis is complete.

SPF record validation — all authorized senders, lookup count, hardfail configuration
DKIM selector discovery — active signing keys, selector health, domain alignment
DMARC policy check — enforcement level, alignment mode, aggregate report destination
MX record analysis — mail server configuration, TLS support, forwarder detection
Spoofing risk assessment — whether your domain can be impersonated right now
Deliverability impact summary — what percentage of your emails are being affected

No licenses. No per-domain surprises.

Audit
$297

One-time. Includes a full outside-in scan of your domain's public DNS, plain-English diagnosis of all authentication issues, and a written remediation plan. No commitment to fix.

  • Complete DNS authentication scan
  • Written diagnosis with risk levels
  • Specific remediation steps
  • 30-day follow-up check-in
Most common
Audit + Fix Sprint
$897

Full audit plus we apply the fix. We update your DNS, validate alignment against live mail servers, and confirm your domain is authenticated before we call it done.

  • Everything in Audit
  • We apply all DNS changes
  • Live validation with test sends
  • 48–72 hour turnaround
  • 90-day monitoring retainer included
Monitoring
$49/mo

Ongoing monitoring keeps your domain clean as your email stack evolves. New tool added? Marketing platform onboarded? We catch the drift before it becomes a deliverability problem.

  • Weekly automated scan
  • Alert when authentication breaks
  • Monthly health report
  • Includes remediation priority on alert
Get a free domain health check

Know exactly what's wrong with your email.

Enter your domain and we'll tell you — SPF, DKIM, DMARC, all of it. No sign-up, no credit card.

Typically completed within one business day

If your emails are being rejected, no amount of great copy matters.

The 87% of businesses that aren't properly authenticated aren't sending less — they're sending email that disappears before anyone reads it. InboxRescue closes that gap. One scan, one fix, ongoing monitoring. Your emails reach inboxes.

IR
Built by Nick Stoianov, PhD — Head of Global Technical Advisory at Adobe Commerce