321 lines
12 KiB
Markdown
321 lines
12 KiB
Markdown
<div align="center">
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<picture>
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<source media="(prefers-color-scheme: dark)" srcset="public/branding/Bulwark_Logo_with_Lettering_White_and_Color.svg" />
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<source media="(prefers-color-scheme: light)" srcset="public/branding/Bulwark_Logo_with_Lettering_Dark_Color.svg" />
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<img src="public/branding/Bulwark_Logo_with_Lettering_Dark_Color.svg" alt="Bulwark Webmail" width="280" />
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</picture>
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# Bulwark Webmail
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A modern, self-hosted webmail client for [Stalwart Mail Server](https://stalw.art/), built with Next.js and the JMAP protocol.
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[](LICENSE)
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[](https://discord.gg/tYCujymGrT)
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[](CHANGELOG.md)
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[](https://ghcr.io/bulwarkmail/webmail)
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</div>
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---
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## Installer
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New in **1.6.4**: a web-based setup wizard runs on first launch – no `.env.local` editing, no shelling into the container.
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<picture>
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<source media="(prefers-color-scheme: dark)" srcset="screenshots/installer-dark.png" />
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<img src="screenshots/installer.png" alt="Setup wizard" width="100%" />
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</picture>
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Point a browser at the running container and the wizard guides you through:
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- **Server** – probe one or more JMAP endpoints, optional auto-pick by email domain, Stalwart feature toggle
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- **Auth** – OAuth2 / OIDC discovery and validation, or basic-auth fallback
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- **Security** – generate or paste a `SESSION_SECRET`, opt into settings sync
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- **Logging** – text or JSON, level
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- **Branding** – upload favicon, app logos, login logos, and company / legal URLs
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- **Review** – grouped summary with an advanced toggle for the full config
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- **Admin** – set the initial admin password and optionally drop a `.config-locked` marker so the config volume can be remounted read-only
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The wizard writes to `ADMIN_CONFIG_DIR` (`./data/admin` by default). Setting `JMAP_SERVER_URL` in the environment skips the wizard and uses env-managed configuration instead.
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---
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## Screenshots
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<picture>
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<source media="(prefers-color-scheme: dark)" srcset="screenshots/mail-dark.png" />
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<img src="screenshots/mail-white.png" alt="Mail view" width="100%" />
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</picture>
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<table>
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<tr>
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<td width="50%"><img src="screenshots/calendar.png" alt="Calendar" /></td>
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<td width="50%"><img src="screenshots/contacts.png" alt="Contacts" /></td>
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</tr>
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<tr>
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<td><sub><b>Calendar</b> – month, week, day, and agenda views with drag-to-reschedule, iMIP invitations, and CalDAV subscriptions.</sub></td>
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<td><sub><b>Contacts</b> – multiple address books, groups, vCard import/export, and autocomplete in the composer.</sub></td>
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</tr>
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<tr>
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<td><img src="screenshots/theme.png" alt="Themes" /></td>
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<td><img src="screenshots/plugins.png" alt="Plugins" /></td>
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</tr>
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<tr>
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<td><sub><b>Themes</b> – bundled color themes or upload your own as ZIP bundles; admins can enforce presets.</sub></td>
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<td><sub><b>Plugins</b> – extend the client with bundled or third-party plugins installed from a .zip file.</sub></td>
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</tr>
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<tr>
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<td><img src="screenshots/mail-white.png" alt="Light mode" /></td>
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<td><img src="screenshots/settings.png" alt="Settings" /></td>
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</tr>
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<tr>
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<td><sub><b>Light mode</b> – full theme support with intelligent color transformation for HTML emails.</sub></td>
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<td><sub><b>Settings</b> – appearance, identities, filters, templates, security, and more.</sub></td>
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</tr>
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</table>
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## Overview
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Bulwark is a full webmail suite, not just an inbox. It bundles the four apps most self-hosters end up wanting on the same login:
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- **Mail** – threading, unified inbox, cross-account "All accounts" views, full-text search, Sieve filters, S/MIME, templates
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- **Calendar** – month/week/day/agenda, recurring events, iMIP invitations, CalDAV subscriptions
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- **Contacts** – multiple address books, groups, vCard import/export
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- **Files** – Stalwart's JMAP FileNode storage with previews and folder upload
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Plus the infrastructure around them: a web setup wizard, OAuth2 / OIDC SSO, TOTP 2FA, multi-account with HTTP/2 connection pooling, 18 languages, PWA install, dark/light themes, a plugin system with an extension marketplace, and an admin dashboard.
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Full feature list: **[FEATURES.md](FEATURES.md)**.
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---
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## Quick Start
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### Docker
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```bash
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docker run -d -p 3000:3000 ghcr.io/bulwarkmail/webmail:latest
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```
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Or with Docker Compose:
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```bash
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docker compose up -d
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```
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On first launch, open `http://localhost:3000` – the **web setup wizard** walks you through JMAP server, OAuth, branding, and the admin password. No `.env.local` editing required. Existing installs that already define `JMAP_SERVER_URL` in their environment skip the wizard and keep the env-managed flow described under [Configuration](#configuration).
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### From Source
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```bash
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git clone https://github.com/bulwarkmail/webmail.git
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cd webmail
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npm install
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npm run build && npm start
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# Then open http://localhost:3000 to run the setup wizard
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```
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### Development
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```bash
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npm run dev # Dev server with a mock JMAP server
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npm run typecheck
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npm run lint
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```
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## Configuration
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Most deployments are configured through the **setup wizard** (on first launch) and the **admin dashboard** thereafter; values are written to the admin config directory rather than `.env.local`. Environment variables remain supported for operators who prefer file-driven configuration or read-only / immutable infrastructure. When an environment variable is set, it takes precedence over the corresponding admin-managed value, so setting `JMAP_SERVER_URL` will hide that field from the wizard and lock it in the admin UI.
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All variables are evaluated at runtime, so Docker deployments can be reconfigured without rebuilding. Edit `.env.local`:
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```env
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# Optional – overrides whatever the wizard writes
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JMAP_SERVER_URL=https://mail.example.com
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APP_NAME=My Webmail
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```
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<details>
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<summary>Server listen address</summary>
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```env
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HOSTNAME=0.0.0.0 # Default; use "::" for IPv6
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PORT=3000
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```
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</details>
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<details>
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<summary>OAuth2 / OIDC</summary>
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```env
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OAUTH_ENABLED=true
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OAUTH_CLIENT_ID=webmail
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OAUTH_CLIENT_SECRET= # optional, for confidential clients
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OAUTH_CLIENT_SECRET_FILE= # path to a file containing the secret
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OAUTH_ISSUER_URL= # optional, for external IdPs
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```
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Endpoints are auto-discovered via `.well-known/oauth-authorization-server` or `.well-known/openid-configuration`.
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</details>
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<details>
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<summary>Session & settings sync</summary>
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```env
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SESSION_SECRET= # openssl rand -base64 32
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SESSION_SECRET_FILE=/session-secret # path to a file containing the secret
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SETTINGS_SYNC_ENABLED=true
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SETTINGS_DATA_DIR=./data/settings # mount as a volume in Docker
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```
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Credentials are encrypted with AES-256-GCM and stored in an httpOnly cookie (30-day expiry). Settings sync stores per-account preferences encrypted at rest and requires `SESSION_SECRET`.
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</details>
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<details>
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<summary>Custom JMAP endpoint</summary>
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```env
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ALLOW_CUSTOM_JMAP_ENDPOINT=true
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```
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Shows a "JMAP Server" field on the login form. External servers must CORS-allow the webmail origin.
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</details>
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<details>
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<summary>Branding & PWA</summary>
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```env
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APP_NAME=My Webmail
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APP_SHORT_NAME=Webmail
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APP_DESCRIPTION=Your personal mail
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FAVICON_URL=/branding/favicon.svg
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PWA_ICON_URL=/branding/icon.svg # falls back to FAVICON_URL
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PWA_THEME_COLOR=#3b82f6
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PWA_BACKGROUND_COLOR=#ffffff
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APP_LOGO_LIGHT_URL=/branding/logo-light.svg
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APP_LOGO_DARK_URL=/branding/logo-dark.svg
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LOGIN_LOGO_LIGHT_URL=/branding/login-light.svg
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LOGIN_LOGO_DARK_URL=/branding/login-dark.svg
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LOGIN_COMPANY_NAME=My Company
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LOGIN_WEBSITE_URL=https://example.com
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LOGIN_IMPRINT_URL=https://example.com/imprint
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LOGIN_PRIVACY_POLICY_URL=https://example.com/privacy
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# Per-domain overrides (optional). When the webmail is served on multiple
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# hostnames, each host can override any subset of the branding fields above.
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# Match is on the request Host (or X-Forwarded-Host). Use "*.example.com" to
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# match any subdomain. Unset fields fall back to the global values.
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DOMAIN_BRANDING=[{"host":"maildomain1.com","loginCompanyName":"Company One","loginLogoLightUrl":"/branding/one.svg"},{"host":"maildomain2.com","loginCompanyName":"Company Two"}]
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```
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</details>
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<details>
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<summary>Extension directory</summary>
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```env
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EXTENSION_DIRECTORY_URL=https://extensions.bulwarkmail.org
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```
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Enables the admin marketplace for browsing and installing plugins and themes.
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</details>
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<details>
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<summary>Stalwart integration & logging</summary>
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```env
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STALWART_FEATURES=true # password change, Sieve filters, etc.
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LOG_FORMAT=text # "text" or "json"
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LOG_LEVEL=info # error | warn | info | debug
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```
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</details>
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<details>
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<summary>Admin data directories</summary>
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```env
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ADMIN_CONFIG_DIR=./data/admin # operator-authored: config.json, policy.json, plugins/, themes/
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ADMIN_STATE_DIR=./data/admin-state # runtime: audit log, login timestamps, setup token
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ADMIN_CONFIG_READONLY=true # enforce read-only mode at the app layer
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```
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The split lets you mount the config volume read-only after the setup wizard completes. Legacy installs that pre-date the split keep working through `ADMIN_DATA_DIR`.
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</details>
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<details>
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<summary>Subpath / reverse proxy mount</summary>
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To serve the webmail at a subpath (e.g. `https://example.com/webmail`):
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```env
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NEXT_PUBLIC_BASE_PATH=/webmail
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NEXT_PUBLIC_LOCALE_PREFIX=always # avoids next-intl rewrite loops
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```
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Unlike most other variables, `NEXT_PUBLIC_BASE_PATH` is read at **build time** because Next.js bakes it into emitted asset URLs. To use it with the published Docker image, build your own image with the variable set:
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```bash
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docker build --build-arg NEXT_PUBLIC_BASE_PATH=/webmail -t bulwark-webmail .
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```
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Then point your reverse proxy at the container without stripping the prefix - the app expects to receive requests under `/webmail/...` and serves all routes (`/webmail/api/...`, `/webmail/_next/static/...`, `/webmail/sw.js`, etc.) accordingly.
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</details>
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## Keyboard Shortcuts
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| Key | Action |
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| ------------- | ----------------------- |
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| `j` / `k` | Navigate between emails |
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| `Enter` / `o` | Open email |
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| `Esc` | Close / deselect |
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| `c` | Compose |
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| `r` / `R` | Reply / Reply all |
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| `f` | Forward |
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| `s` | Star |
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| `e` | Archive |
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| `#` | Delete |
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| `/` | Search |
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| `?` | Show all shortcuts |
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## Tech Stack
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| ------------- | ------------------------------------------------- |
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| **Framework** | [Next.js 16](https://nextjs.org/) with App Router |
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| **Language** | TypeScript |
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| **Styling** | [Tailwind CSS v4](https://tailwindcss.com/) |
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| **State** | [Zustand](https://zustand-demo.pmnd.rs/) |
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| **Protocol** | Custom JMAP client (RFC 8620) |
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| **i18n** | [next-intl](https://next-intl-docs.vercel.app/) |
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| **Icons** | [Lucide React](https://lucide.dev/) |
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## Why Stalwart?
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[Stalwart](https://github.com/stalwartlabs/mail-server) is a Rust mail server with native JMAP support – not IMAP/SMTP with JMAP bolted on. It handles JMAP, IMAP, SMTP, and ManageSieve in a single self-hosted binary with no third-party dependencies.
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## Contributing
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See [CONTRIBUTING.md](CONTRIBUTING.md).
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## License
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[GNU AGPL v3](LICENSE). This repository preserves the original MIT attribution for the fork lineage in [NOTICE](NOTICE).
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## Acknowledgments
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Thanks to [root-fr/jmap-webmail](https://github.com/root-fr/jmap-webmail/) and [@ma2t](https://github.com/ma2t) for the groundwork this project builds upon.
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