Overview

Heymarket recommends a fixed width of 600 pixels for broadcast emails built with the email builder. This ensures consistent rendering across email clients and devices and follows industry best practices for marketing and transactional emails. This does not apply to the chat composer or conversation view.

Why 600px

• Fits within the average desktop email client viewport (500–600px)
• Reduces horizontal scrolling
• Ensures compatibility with most email clients
• Easier to scale responsively on mobile

Custom Widths

You can adjust template width, but increasing it beyond 600px is not recommended unless you have dedicated design and QA resources. Larger widths can render incorrectly on smaller screens if not carefully optimized.

Responsive Design

Heymarket templates are responsive by default. Images, columns, and blocks will scale to fit within the set width while maintaining their proportions.

Best Practices

• Keep the email body width at 600px
• Ensure images and tables stay within that frame
• If using custom code, respect the width defined in your template styles