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Matthieu MALVACHE
ce3b34f535
The previous :has()-based print rules worked in Chromium's headless PDF export but produced a blank page in Firefox. Rather than fight browser-specific differences in @media print with :has(), flex, and visibility on deeply-nested ancestors, clone the email viewer DOM into a dedicated #print-overlay appended directly to document.body before calling window.print(), and add a html.is-printing class. Print CSS now targets a single well-known id (#print-overlay) at the body root: everything else is display:none'd (no :has() needed), the overlay flows naturally on the page, and the subtree is forced to black text on a transparent backdrop with a white root background so dark-mode rendering prints cleanly on paper with Firefox's default "Print background" setting off. afterprint removes the overlay and clears the class, so both successful prints and cancellations clean up.
JMAP Webmail
A modern, privacy-focused webmail client built with Next.js and the JMAP protocol.
Screenshots
Login
Inbox
Email Viewer
Compose
Dark Mode
Settings
Features
Core Email
- Modern UI - Clean, minimalist three-pane layout
- Email Threading - Gmail-style conversation view with inline expansion
- Real-time Updates - Push notifications for new emails via EventSource
- Attachments - Upload and download file attachments
- Search - Full-text email search with pagination
- Draft Auto-save - Never lose your work while composing
Identity & Privacy
- Identity Management - Multiple email identities with custom signatures
- Sub-Addressing - Generate tagged email addresses (user+tag@domain.com) for better organization
- Newsletter Management - RFC 2369 one-click unsubscribe with security validation
- Spam Reporting - Mark emails as spam with bidirectional handling and batch operations
- External Content Blocking - Privacy protection with user-controlled image loading
- Shared Folders - Multi-account access with proper ID namespacing
User Experience
- Keyboard Shortcuts - Navigate efficiently with vim-style hotkeys (j/k, r, f, etc.)
- Context Menus - Right-click for quick actions on emails
- Drag & Drop - Move emails between folders with native HTML5 DnD
- Color Tags - Organize emails with color labels
- Dark Mode - Full dark theme with intelligent email color transformation for readability
- i18n - English, French, Japanese, Spanish, Italian, German, Dutch, and Portuguese language support with auto-detection
- Mobile Responsive - Adaptive single/multi-pane layout for all screen sizes
Tech Stack
- Framework: Next.js 16 with Turbopack
- Styling: Tailwind CSS v4
- State: Zustand
- Protocol: JMAP (RFC 8620)
- i18n: next-intl
Getting Started
# Install dependencies
npm install
# Run development server
npm run dev
Open http://localhost:3000 and connect to your JMAP server.
Configuration
Create a .env.local file:
APP_NAME=Your Webmail
JMAP_SERVER_URL=https://your-jmap-server.com
Runtime vs Build-time Configuration
| Variable | Type | Description |
|---|---|---|
APP_NAME |
Runtime | App name displayed in the UI |
JMAP_SERVER_URL |
Runtime | JMAP server URL (required) |
NEXT_PUBLIC_APP_NAME |
Build-time | Legacy fallback for app name |
NEXT_PUBLIC_JMAP_SERVER_URL |
Build-time | Legacy fallback for server URL |
Runtime variables are read at request time, enabling post-build configuration (ideal for Docker).
Build-time variables are baked into the bundle and require a rebuild to change.
License
MIT