Free Email Tester is Live
Real-time open & click tracking - No setup required
Preview and test professional email templates for free. Use these templates to verify how your emails will look in different clients, test your email sending infrastructure, or find inspiration for your next transactional or promotional email.
Pick an email template
Enter your recipient email
Send and check your inbox
Test your email rendering by sending this template directly to your inbox. Once sent, you can monitor delivery, opens, and clicks securely via our Real-Time Dashboard. Test emails are sent from [email protected] (check Spam folder if you do not see it).
Test emails will be sent from [email protected]. Please check your Spam or Junk folder if you do not receive it in a few seconds.
Welcome to Our Service!Scrollable Area
<html>
<body>
<h1>Welcome to Our Service!</h1>
<p>Hi there,</p>
<p>Thank you for joining our platform. We're <strong>excited</strong> to have you on board!</p>
<p>Best regards,<br>The Team</p>
</body>
</html>Email testing is a critical phase in the development of any digital product. Whether you are building a SaaS platform, an e-commerce store, or a simple newsletter, ensuring your emails render correctly across devices and clients is paramount to maintaining a professional brand image and achieving high user engagement.
Unlike modern web browsers that follow standardized rendering specifications, email clients (such as Gmail, Apple Mail, Yahoo Mail, and various versions of Outlook) use radically different HTML rendering engines. For instance, desktop Outlook on Windows uses the Microsoft Word rendering engine, which lacks support for modern CSS features like flexbox, grid, absolute positioning, web fonts, and complex margins. You can check client-by-client support for CSS features on Can I Email. Testing your email layout with valid templates ensures compatibility and prevents formatting breakage.
Gmail will automatically clip/truncate any HTML email that exceeds a file size of 102KB (excluding images, which are loaded externally). When an email is clipped, Gmail hides the remainder of the content under a "View entire message" link, which also breaks tracking pixels and tracking scripts placed at the bottom of the email. Keep your raw HTML lightweight, minify your CSS, and clean up redundant nodes to stay well under this limit.
Ensure SPF, DKIM, and DMARC records are correctly configured on your sending domain. You can monitor your domain's health and spam rate on Google Postmaster Tools.
Always design for a mobile-first experience. Use fluid grids, table layouts, and media queries to scale content between 320px and 650px.
Many clients block images by default. Add descriptive `alt` text to every image element so context is preserved when images fail to render.
Ensure that links, buttons, and pixels used to track clicks and opens are correctly structured and don't trigger spam scoring systems.
Spam filters use heuristic analysis to score incoming messages. To avoid being routed to the spam folder, follow these advanced email development guidelines:
To help you build, test, and validate production-ready HTML emails, we recommend utilizing these verified industry tools and resources:
The definitive CSS and HTML compatibility tables showing support across 50+ email clients.
Track your domain's health, reputation, SPF/DKIM verification stats, and spam delivery rates directly at Google.
Verify the syntax correctness and structure of your custom templates before loading them into your SMTP stack.
A collection of specifications and testing utilities to verify your domain's public DKIM keys.
Common questions about our email testing service.