Email development · Free developer tool
HTML email previewer
Paste your email HTML, preview desktop and mobile widths, and download your source. All in your browser.
Make sense of the result
A preview before the real thing.
Paste a full HTML document or an email fragment, then switch between desktop and mobile widths. Use the example to try a responsive welcome email. Copy or download the original HTML whenever you are ready.
Your source stays in your browser
Pasted HTML is not sent to SendPanda. The preview removes executable content and runs in an isolated frame. Remote images, remote stylesheets, scripts, forms and navigation are disabled. Inline styles and embedded style blocks can still shape the layout.
Browser preview, then inbox testing
This shows how a browser lays out your email at different widths. It does not emulate Outlook, Gmail, Apple Mail or their CSS support. Test important emails in the actual clients your recipients use before relying on a layout.
Turn the preview into a template
SendPanda accepts email HTML and supports saved templates with escaped variables. Follow the quickstart to send a first message or read the integration reference for template publishing and testing.
The next step
Give that email somewhere to go.
Send transactional emails, build templates and receive replies on your own domain. 1,000 emails a month free.