Find answers to your questions, learn how to use our features, and get the most out of Email HTML Validator.
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Quick answers to the most common questions
Our validation engine tests against real email client rendering engines and uses comprehensive rule sets based on actual client behavior. We maintain a 95%+ accuracy rate across all major email clients.
No, your HTML code is processed entirely in memory and is never stored on our servers. We take your privacy and security seriously.
We test against 40+ email clients including Gmail, Outlook (all versions), Apple Mail, Yahoo Mail, Thunderbird, and many others across desktop, mobile, and webmail platforms.
Yes! Our API supports bulk validation for Professional and Enterprise plans. You can validate multiple emails simultaneously with our batch endpoints.
We offer a 30-day money-back guarantee for all paid plans. If you're not satisfied, contact us for a full refund.
Our validation rules and email client compatibility database is updated weekly to ensure we catch the latest changes in email client behavior.
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