Beautiful Substack Forms

Generate custom embed forms for your Substack publication.
No coding required. Just style, copy & paste.

Content
Layout & Style
6px
Colors
Accent
Text
Placeholder/Text
Embed Code
Frequently Asked Questions
Is this tool free to use?

Yes, Formstack is completely free. You can generate as many forms as you like for your Substack publication.

Do you store my subscribers' emails?

No. We take privacy seriously. Emails are passed directly to Substack via our proxy server. We do not store, log, or sell any subscriber data.

Does it work on any website?

Yes! The generated code is standard HTML and JavaScript. It works on WordPress, Webflow, Carrd, Ghost, and any other platform that allows custom code embeds.

Why use this instead of the default Substack embed?

The default Substack embed is an iframe, which is hard to style and often loads slowly. Formstack gives you a lightweight, native form that you can fully customize to match your brand's colors and style.