In simple English
This tool lets you add a drag-and-drop email builder into your own web app. Your users can design newsletters and transactional messages without writing code. The editor outputs clean code that works across every major email client. It is free to use in your product, though some parts switch to a standard open licence after two years. You host everything yourself and keep full control of your data.
What it is
A framework-agnostic software development kit (SDK, a collection of programming tools and libraries that help developers build features faster) containing a visual drag-and-drop email editor. It exports templates to standard JSON (JavaScript Object Notation, a lightweight way to store and send data) and MJML (Mailjet Markup Language, a special coding language designed to create responsive emails easily).
What it is good for
Solo builders and small teams who want to give their customers a professional way to design emails inside their product without paying high monthly fees for third-party editing services.
- Embeds easily into React, Vue, Svelte, or plain JavaScript apps.
- Supports custom blocks and merge tags for dynamic user data.
- Includes importers for templates from other popular builders.
- Uses a source-available licence that restricts selling a direct competing editor.
- Requires you to set up your own backend storage for saving templates and media.
- Main editor packages use a custom licence that converts to MIT only after two years.
Paid third-party email editing services or building a custom drag-and-drop interface from scratch.
An email service provider like Resend or Postmark to actually deliver the messages your users design.
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npm install @templatical/editor @templatical/renderer