Email Security Setup Center
Check, generate, and validate your DNS email records with guided tools. Get actionable recommendations and step-by-step setup guidance.
Email Authentication
Core SPF, DKIM, and DMARC tools to protect your domain from spoofing and improve deliverability.
DMARC Checker
Validate your DMARC record and get recommendations to strengthen your email authentication policy.
DMARC Generator
NEWGenerate a DMARC record with staged presets — from monitoring to full enforcement.
SPF Checker
Validate your SPF record, check DNS lookup count, and detect common configuration mistakes.
SPF Builder
NEWBuild an SPF record with guided provider selection and automatic DNS lookup counting.
DKIM Checker
Validate DKIM records for any selector. Check key strength, configuration, and alignment.
Transport Security
Protect email in transit with MTA-STS and TLS-RPT. Prevent downgrade attacks and monitor TLS failures.
Brand & Readiness
Check your readiness for BIMI brand indicators and advanced authentication features.
Domain Posture
Supporting tools to complete your domain security picture.
Domain Security Score
Get a comprehensive security score for your domain across all email authentication protocols.
MX Checker
NEWValidate MX record configuration and check mail server health.
CAA Checker & Generator
NEWCheck and generate CAA records to control which CAs can issue certificates for your domain.
Dangling DNS Scanner
Scan for dangling DNS records and CNAME takeover risks across your domain.
DANE/DNSSEC Checker
Check DANE readiness, DNSSEC validation, and TLSA records.
ROI Calculator
Calculate the business impact of email authentication and the cost of inaction.
UK Public Sector
Tools for UK organisations replacing NCSC Mail Check and aligning with CAF requirements.
Related features
Need continuous monitoring?
These free tools give you a snapshot. SpoofSentry monitors your email authentication continuously and alerts you when records drift, break, or get overwritten.