W3C Markup Validation Service: A widely-used validator that checks for errors in HTML code.
Litmus: Offers comprehensive testing and validation for different email clients and devices.
Email on Acid: Provides a robust set of tools for testing and validating email HTML.
Common HTML Issues in Email Marketing
Several issues can arise when coding HTML for emails, including: Broken Links: Ensure all links are correctly formatted and functional.
Missing Alt Text: Always include alt text for images to enhance accessibility and deliverability.
Incorrect CSS: Inline CSS is preferred as many email clients strip out external stylesheets.
Best Practices for HTML Validation
To make sure your HTML emails are validated correctly, follow these best practices: Use
tables for layout instead of CSS positioning.
Keep your HTML code simple and avoid unnecessary tags.
Always
test your emails on multiple clients and devices before sending.
Poor rendering on some email clients, negatively impacting user experience.
Increased chances of your email being flagged as
spam.
Lower
click-through rates and engagement due to broken elements or links.
Ensuring all tags are properly closed and nested.
Using validated and supported
HTML attributes and tags.
Regularly updating your
email templates to adhere to best practices.
Conclusion
Validating HTML in email marketing is an essential practice to ensure high deliverability and a positive user experience. Utilize the right tools, follow best practices, and regularly test your emails across different clients to maintain effective and engaging email campaigns.