Email Domain Health Checker
Check your domain's MX, SPF, DKIM, and DMARC records instantly. Get a visual report card with an overall grade.
Check your domain →SPF Record Checker
Analyze your SPF record in detail — mechanisms, DNS lookup count, and security assessment with plain-English explanations.
Check SPF →DKIM Record Checker
Look up your DKIM records by selector. Analyze key type, key strength, and detect your email provider automatically.
Check DKIM →DMARC Record Checker
Analyze your DMARC policy — enforcement level, reporting setup, alignment mode, and cross-check SPF and DKIM.
Check DMARC →Email Signature Generator
Build a professional HTML email signature with custom colors, fonts, and photo styling. Copy the email-friendly HTML instantly.
Build your signature →NPS, CSAT & CES Calculator
Calculate your Net Promoter Score, Customer Satisfaction Score, or Customer Effort Score instantly with visual results and industry benchmarks.
Calculate your score →SMTP Test Tool
Test your SMTP server connection with a live conversation log. Inspect TLS details, server capabilities, and SMTP response codes.
Test SMTP →What Browser Am I Using?
Instantly detect your browser, OS, screen resolution, and more. Get a shareable link to send to your support team.
Check your browser →