30 open-source projects similar to mailchimp/email-blueprints, ranked by shared indexed features. Tags may describe platforms or build tools rather than the same primary purpose. Check each project’s use case, license, and deployment requirements before treating it as a replacement.
Heml is a framework providing a custom markup language and compiler designed to generate responsive HTML and CSS for consistent rendering across email clients. It functions as a system for transforming specialized markup strings into deliverable email templates and associated metadata. The project features a component system for defining reusable custom elements and style rules to standardize design patterns. It includes a responsive layout engine that converts flexible grid structures, columns, and rows into compatible fixed-width tables and fluid layouts. The toolset covers email metadata
Email-Boilerplate is an HTML email template framework and design system providing a foundational code structure for developing newsletters and transactional emails. It serves as a cross-client email layout library designed to ensure consistent rendering across diverse desktop and mobile email applications. The project utilizes a table-based layout library and reusable code patterns to maintain structural integrity within restrictive email rendering engines. It employs a responsive design system that combines fluid hybrid scaling and semantic markup normalization to resolve common rendering in
Cerberus is an HTML email template framework providing a collection of tested markup patterns and architectural kits. It is designed to create responsive email newsletters that render consistently across diverse software clients. The project features a responsive email layout system using fluid and hybrid table-based structures, alongside a cross-client CSS kit that employs conditional markup to maintain visual consistency in legacy clients. It includes specific methodologies for implementing dark mode by adjusting colors and images based on operating system theme preferences. The framework
React Email Editor is a drag-and-drop visual builder for creating responsive email templates, built as a React embeddable component. It also serves as an AI-powered email designer, a collaborative email design tool, and a React component library for composing emails programmatically with JSX. The editor represents designs as structured JSON and supports multi-format rendering for email clients, web pages, and PDF. What distinguishes this editor is its deep AI integration: users can generate full email templates from natural language, rewrite text with chosen intent, produce multiple text vari
This project is a responsive HTML email template and framework designed to maintain visual consistency across diverse desktop and mobile email applications. It provides a set of CSS and HTML patterns that ensure layouts, images, and preheaders render correctly across various email service providers. The framework utilizes a fluid-grid design system with percentage-based widths and max-width constraints to scale across different screen sizes. It employs a strategy of applying styles directly to HTML elements to prevent email clients from stripping external or internal stylesheets. The system
This project is an HTML email framework and compiler designed to build responsive emails using a high-level syntax that transforms into table-based layouts. It functions as an HTML-to-table compiler and CSS inliner, ensuring that simplified markup is converted into the complex nested structures and inline attributes required for cross-client compatibility. The framework features a responsive email grid system and Sass-based styling, allowing the use of variables to manage colors, typography, and spacing. These tools enable custom brand theming and the creation of fluid layouts that adapt to v
This project is a responsive email design framework providing a collection of HTML templates and boilerplates specifically for transactional messages. It serves as a toolkit for building and validating emails that maintain a consistent appearance across diverse email clients and devices. The framework includes pre-made layouts for common business communications, such as billing receipts, account warnings, and email verification requests. It utilizes a CSS inlining tool to convert external stylesheets into inline element styles, ensuring visual consistency across different providers. The syst
This project is a visual HTML email builder and responsive design tool used to create mobile-ready email layouts. It includes a dynamic email template engine and an artificial intelligence generator for drafting email copy and structural layouts. The system utilizes a component-based layout engine to build emails using standardized blocks and columns, which are translated into table-based HTML for compatibility across diverse email clients. It supports personalization through variable-based template interpolation and conditional logic to adjust content based on specific data sets. The platfo
React Email is a development framework for designing and testing HTML emails using a library of modular components. It provides a set of reusable UI primitives that allow developers to build email templates through declarative code, ensuring consistent visual presentation across various desktop and mobile email service providers. The framework functions by transforming component trees into static HTML markup, automatically handling the complex requirements of email client rendering. It includes a built-in engine that extracts style declarations and injects them directly into HTML elements, by
Foundation Emails is a responsive HTML email framework designed to create layouts that render consistently across different screen sizes and email clients. It functions as a system for building responsive emails and includes a CSS inliner to convert external stylesheets into inline HTML attributes. The framework incorporates an HTML table layout generator that converts simplified custom tags into the complex table structures required for legacy email client rendering. This process automates the creation of layouts that maintain visual consistency in restrictive email software. The project pr
CssToInlineStyles is a CSS inliner for HTML emails that converts stylesheets into inline style attributes on HTML elements. It functions as a style resolver and transformation engine, mapping CSS selectors to HTML tags to ensure consistent visual rendering across diverse email clients and providers. The tool calculates final computed styles by applying specificity and inheritance rules before injecting the resolved properties directly into the style attributes of the corresponding HTML elements. It utilizes DOM-based style calculation and selector mapping to determine which declarations apply
MUI is a lightweight CSS framework that implements Material Design visual and interaction guidelines for web interfaces. It provides a suite of tools for building interfaces through a responsive CSS grid system and a set of components based on standardized visual patterns. The library includes a customizable CSS theme engine and a specialized HTML email styling library. These tools allow for the modification of default palettes and visual styles to align an interface with a specific brand identity, while ensuring consistent rendering of email templates across different email clients. The fra
Spectre is a comprehensive CSS framework and UI utility toolkit designed for building responsive web interfaces. It functions as a CSS component library that provides pre-styled interface elements and helper classes to facilitate frontend UI development. The framework is distinguished by a pure-CSS component architecture that avoids dependence on external JavaScript runtimes. It utilizes a SASS-based build pipeline that supports class prefixing, stylesheet pruning, and a variable-based theme system for creating custom design systems. The project covers a wide range of layout and interface ca
Skeleton is a lightweight responsive CSS boilerplate and mobile-first framework. It provides a foundation for building mobile-friendly websites through a fluid 12-column grid system, a minimal CSS reset library to normalize browser defaults, and default styling for raw HTML elements. The project emphasizes a mobile-first development approach, using percentage-based widths and predefined media queries to progressively enhance layouts for larger screens. It includes a utility-first library of single-purpose classes to manage common layout tasks such as floating elements, clearing, and width con
Papercss is a CSS UI framework and document-style design system used to build responsive web page layouts. It functions as a Less-based CSS library that applies a paper-like aesthetic and structured typography to give web pages the appearance of physical documents. The project also incorporates a utility-first CSS library model for rapid styling. The framework is distinguished by its ability to automate visual decorations, such as applying rotating border styles and shadow effects to child elements. It utilizes a Less-based variable system and modular stylesheet compilation, allowing users to
This project is a full-stack React starter kit and TypeScript web application boilerplate. It provides a pre-configured project template that combines a frontend and backend to accelerate the development of production-ready web applications. The kit is distinguished by its focus on type-safe architectures, utilizing a monorepo structure to synchronize data types between the server and client. It integrates specific implementations for SaaS operations, including recurring subscription billing via Stripe and user identity authentication supporting passkeys, social logins, and email verification
Flexboxgrid is a responsive CSS framework and layout engine based on CSS3 standards. It provides a grid system that uses the flexbox model to arrange page elements into flexible, proportional grids that adapt to different screen sizes and device resolutions. The framework implements a float-free responsive design, utilizing a media-query breakpoint system to adjust layouts and column counts based on viewport width. It employs percentage-based column sizing and negative-margin guttering to maintain consistent spacing and fluid scaling across various displays. The system maps layout configurat
Susy is a Sass layout framework and grid computation engine designed to automate complex mathematical layout calculations within stylesheets. It functions as a responsive grid generator that calculates column widths, gutters, and spans based on customizable viewport breakpoints to ensure precise element alignment. The system includes a visual layout debugger that generates browser-based grid overlays to verify column alignment and baseline rhythm during development. It also provides utilities for creating repeating background colors and gradients using a template-based syntax. The framework
UIkit is a CSS front-end framework and accessible UI component library designed for building responsive web interfaces. It provides a comprehensive set of styling classes and modular components alongside a JavaScript interaction toolkit for managing behavioral elements. The framework includes native support for internationalized web interfaces, featuring multi-locale text translation and right-to-left layout directions. It employs a responsive layout engine that uses flexible grids, adaptive breakpoints, and container widths to align content across different screen sizes. The toolkit covers
MJML is a responsive email framework and HTML email compiler that translates simplified semantic markup into complex HTML. It functions as an email template engine designed to produce layouts that render consistently across a wide range of email clients. The system provides a markup validation tool to check structural integrity and syntax before compilation. It also includes a version migration utility to upgrade older template files to newer language versions while preserving content and layout structure. The toolset covers several capability areas, including command-line markup compilation
Pure is a CSS UI framework and modular component library designed for building consistent web layouts and interface components. It functions as a responsive CSS grid system and a CSS reset library that normalizes default browser rendering to ensure a uniform appearance across different web environments. The project provides standalone styles for common interactive elements such as buttons, menus, forms, and tables. It utilizes a modular architecture that allows for the inclusion of specific style modules and employs namespace isolation to prevent visual conflicts between components. The fram
BOOTSTRA.386 is a retro CSS framework and web UI kit designed to implement nostalgic user interfaces that mimic the aesthetic of vintage computer systems and old-school operating systems. It provides a collection of pre-styled components and styling engines to maintain a consistent legacy appearance across different screen sizes. The toolkit includes a customizable theme engine and a web-based interface for modifying visual properties and colors. It also features a responsive grid layout system that organizes web content into columns and rows that adapt to various device dimensions. The proj
React Bootstrap is a frontend component framework and responsive UI kit that translates the Bootstrap CSS framework into a React-based component architecture. It provides a collection of reusable, pre-styled interface elements and grid systems designed for consistent, responsive web development. The library distinguishes itself by wrapping raw HTML markup in React components to manage accessibility and stateful behaviors. It utilizes a centralized theme provider to propagate global configuration and breakpoints, while employing portal-based rendering for overlays to prevent clipping issues.
This project is a Node.js email templating engine and SMTP delivery framework used for creating, rendering, and sending custom email templates. It provides a comprehensive suite for email orchestration, including a system for dispatching templated messages and a tool for generating custom layouts to standardize outbound messaging. The framework includes a dedicated HTML CSS inliner that converts external stylesheets into inline styles for consistent rendering across different email clients. It also features a multilingual localization tool for translating template text and subject lines, and
Fomantic-UI is a component-based CSS library and frontend design system used to build consistent, responsive user interfaces. It functions as a CSS framework and responsive UI toolkit, providing a structured approach to managing typography, color palettes, and spacing. The project enables the development of custom UI components and the implementation of unified design systems across web applications. It provides a variable-driven theme compilation process to customize visual styles and a build-time system to compile selected components into production CSS bundles. The toolkit covers a broad
Carbon is an enterprise design system that provides a comprehensive collection of reusable UI components, design tokens, and guidelines for building professional web applications. It functions as a CSS framework that enforces a unified design language across projects through standardized typography, spacing, and color palettes. The system utilizes a platform-agnostic design token system to maintain visual consistency across different technologies. This includes centralized management of brand colors, motion easing curves, and a curated library of accessible SVG icons. The framework covers a
Bootflat is a front-end component library and CSS framework extension that implements a flat-design aesthetic for web application styling. It provides a set of reusable interface elements and a mobile-first grid system to facilitate responsive web design. The project integrates design and development through a PSD-driven workflow, providing professional Photoshop component sets and curated color palettes for interface prototyping. Visual customization is handled via variable-based theme overrides for colors and fonts. The library covers a broad range of UI components, including form elements
Mailtrain is a self-hosted newsletter platform and email marketing tool designed for managing subscriber lists and sending automated email campaigns from a private server. It provides a centralized system for coordinating the creation and delivery of recurring email outreach. The platform includes a visual email template builder for creating responsive layouts and a subscriber management system that uses custom fields to organize audiences into targeted segments. Automation is handled through tools that can trigger newsletters based on remote feeds and scheduled events. Performance is tracke
Framework7 is a mobile user interface framework and single-page application system designed to build responsive web applications with native iOS and Android appearances. It provides a comprehensive library of pre-styled components and a layout engine to create native-style user interfaces across multiple platforms. The framework utilizes a platform-aware theming system that adapts visual styles and color schemes based on detected device settings. It incorporates native mobile behaviors through a dedicated UI kit, including specialized interaction patterns such as pull-to-refresh and swipeable
Semantic-UI is an HTML and CSS UI framework consisting of a themed component library and a responsive layout framework. It provides a collection of reusable interface components and a grid-based system of columns and containers designed to build responsive websites. The framework is distinguished by its use of natural-language class naming, which maps human-readable CSS classes to specific visual styles. It also functions as a right-to-left UI toolkit, utilizing directional mirroring to adjust visual flow and element alignment for languages read from right to left. The system covers frontend