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Free Tool

Email Signature Audit & Grader

Paste your email signature HTML and get an instant score with actionable recommendations for compatibility, branding, and compliance.

Paste your signature and click "Audit"

We'll check structure, compatibility, content, performance, mobile-friendliness, and compliance.

What We Audit

Structure & Compatibility

  • Table-based layout
  • Inline styles only
  • No JavaScript
  • No CSS classes
  • Web-safe fonts

Content & Branding

  • Email address present
  • Phone number
  • Clickable links
  • Social media profiles
  • Image alt text

Performance & Compliance

  • Signature file size
  • Mobile responsiveness
  • Image dimensions
  • Legal disclaimer
  • Accessibility

Want perfect signatures for your whole team?

Siggly ensures every signature passes these checks automatically. Deploy consistent, compliant signatures across your entire organization.