At a Glance:
SENDUNE Email Designer is a free, open-source HTML email editor offering a no-code drag-and-drop designer, a raw HTML editor, and a plain text mode for building templates that can be exported and used with any email service provider.
Overview:
SENDUNE Email Designer is an open-source tool for creating HTML email templates without intermediary code processors like MJML. It provides a minimal, no-code interface focused on simplicity and compatibility across major email clients. The editor supports three template creation methods: a drag-and-drop builder, a direct HTML code editor, and a plain text mode. Once designed, templates can be saved as standard HTML output, making them portable to any email sending platform. The project is built on established email design fundamentals and is installable via npm or yarn for integration into web applications.
Key Decision Points:
Direct HTML output: Templates are saved as standard HTML, meaning they are not locked into a specific email service provider or a proprietary markup language.
Limited fine-grain design controls: The tool explicitly avoids pixel-level controls like line-height adjustments to ensure more reliable rendering across different email clients.
Installable library: It is distributed as a package (npm/yarn) meant to be embedded into your own application, not a standalone SaaS platform.
Custom image storage: The editor requires you to implement and connect your own image upload functionality, such as AWS S3 or Cloudflare R2, rather than providing built-in hosting.
Core Features:
Drag-and-drop designer: A visual, no-code builder for assembling email templates quickly.
Raw HTML code editor: Allows users to write or paste in their own HTML templates for direct editing.
Plain text mode: A dedicated mode for creating minimalist, text-only emails, particularly for transactional messages.
Theme customization: Offers a theming system through SCSS variables to match the editor's UI to a host application's brand colors.
Template portability: Completed designs are exported as standard HTML, making them universally usable across different email delivery services.
Use Cases:
Developers integrating an email design interface directly into a web application for end-users.
Product teams who need to create marketing or transactional email templates that are not tied to a specific email service provider's proprietary builder.
Users who prefer a lightweight, focused email design tool that minimizes compatibility issues by limiting overly complex styling options.
Open-Source Alternative Value:
This project provides a self-contained, embeddable editing component under a permissive license, making it a practical alternative to proprietary, platform-locked email builders. Its core value proposition is direct HTML output, which prevents templates from becoming dependent on a single vendor's system. The tool's deliberate limitation on styling controls is a design choice aimed at increasing the reliability of email rendering, offering a transparent and predictable building process without the overhead of translating intermediate formats like MJML into final HTML.
