MailLock Protocol
Deliverability & Compliance Auditor
Run Free Scan
2026 Compliance Reality Check (Google / Yahoo)

Your emails aren’t “going to spam.”
They’re being filtered as risk.

MailLock Protocol audits your domain for authentication and reputation signals: SPF, DKIM, DMARC, MX, DNSBL. One broken record can quietly erase signups, renewals, invoices, and password resets — the emails that literally move money.

GDPR-aware
We scan DNS — not inbox content.
Compliance-first
Authentication visibility in minutes.
Security signal
Stop spoofing and silent revenue loss.

Run a Free Audit

Get failures + raw evidence now. Unlock step-by-step fixes when ready.

Tip: enter the root domain (no https://)

Used for blacklist checks (DNSBL). If unknown, leave blank.

By scanning you confirm you own/operate this domain or have permission to audit it.

Why this matters (the part nobody tells you)

Deliverability is a security decision now. When your authentication is incomplete, providers don’t “warn you.” They silently degrade you: promotions tab, spam folder, throttling, temporary blocks — the kind of failure that looks like “marketing got weaker” while your revenue pipeline bleeds.

Lost Revenue
Password resets, invoices, onboarding, renewals… vanish without alerts.
Brand Risk
Weak DMARC = spoofing. Attackers impersonate you and you pay the trust bill.
Compliance Pressure
Authentication and alignment are now baseline expectations, not “nice to have.”
Authentication
SPF / DKIM / DMARC

These records prove your sending infrastructure is legitimate. Misconfigurations are treated as risk.

Routing & Reputation
MX / DNSBL

Validate mail routing and detect whether your sending IP is already on common blocklists.

FAQ

Do you read my emails?
No. We only audit public DNS and reputation signals.
Why is “How to fix” locked?
Free gives failures + evidence. Paid unlocks copy-paste records and exact steps.
How fast is the scan?
Usually 5–15 seconds depending on DNS responsiveness.
Can I generate a PDF?
Yes — results page includes a PDF button.