S
sledgeheader.com
Google & Yahoo 2026 Bulk Sender Compliant

The only email reputation engine you will ever need.

Unrivaled domain protection. Deep-inspect raw RFC 5322 headers, validate RFC 8058 One-Click unsubs, audit FCrDNS (PTR) records, enforce MTA-STS transport, and verify BIMI brand logos instantly.

Launch Header Inspector Run Reputation Audit
Sledgeheader Sledgehammer Crushing Spoofed Email
STATUS: REPUTATION SHIELD ACTIVE
RFC 8058 & FCrDNS VERIFIED
Deep Diagnostic Engine

Granular Raw Header & RFC 8058 Inspector

Paste full source email headers to evaluate routing paths, cryptographic DKIM signatures, DMARC alignment, and mandatory RFC 8058 One-Click Unsubscribe headers.

Sanitized client-side processing with XSS defense.
Policy & Compliance Builder

DMARC & BIMI Protocol Generator

Generate airtight TXT records meeting strict enforcement standards and configure your Verified Mark Certificate (VMC) for inbox brand logos.

Configure Protocol Parameters

Generated DNS Record

Publish as a TXT record under _dmarc.sledgeheader.com.

v=DMARC1; p=reject; rua=mailto:dmarc@sledgeheader.com; pct=100; sp=reject; aspf=r; adkim=r;
Live Interception Telemetry

Global Threat Intelligence Stream

Real-time edge telemetry streaming from your Cloudflare D1 database capturing spoofing attacks and vendor authentication failures.

TIMESTAMP / VECTOR ATTACKER IP / ASN / CLASSIFICATION GATEWAY ACTION
Synchronizing with Cloudflare D1 telemetry worker...

Enterprise Infrastructure Health Scanner

Run an exhaustive audit evaluating SPF limits, Reverse DNS (PTR), MTA-STS transport security, blacklist exposure, and Google/Yahoo bulk sender compliance.