---
title: "Deploy Stalwart Webmail"
description: "Self-hosted webmail for your Stalwart mail server (JMAP)"
category: "Other"
url: https://railway.com/deploy/stalwart-webmail
---

# Deploy Stalwart Webmail

Self-hosted webmail for your Stalwart mail server (JMAP)

**[Deploy Stalwart Webmail on Railway](https://railway.com/template/stalwart-webmail)**

- **Creator:** Two Workspaces
- **Category:** Other
- **Total deploys:** 3

## Template content

### webmail https://raw.githubusercontent.com/nomideusz/zaur/main/apps/webmail/static/pwa-192x192.png

- **Source:** https://github.com/nomideusz/zaur
- **Health check:** /health
- **Public domain:** Yes

## Documentation

# Deploy and Host Stalwart Webmail on Railway

[![Deploy on Railway](https://railway.com/button.svg)](https://railway.com/deploy/stalwart-webmail?utm_medium=integration&utm_source=button&utm_campaign=stalwart-webmail)

**The webmail Stalwart is missing.** [Stalwart](https://stalw.art) is a superb
modern mail server, but it ships without a webmail UI. This template fills
that gap: a fast, offline-capable JMAP mail client you point at your own
Stalwart server — one container, two variables, done.

## About Hosting Stalwart Webmail

A single SvelteKit (Node) service with a volume at `/app/.data` for sessions,
rate limits and push subscriptions. Set `PUBLIC_JMAP_SERVER_URL` to your
Stalwart server's base URL (e.g. `https://mail.example.com`) — everything
else has working defaults, and `SESSION_SECRET` is auto-generated. Your users
sign in with their mailbox email + password (app passwords and
`password$totp` TOTP suffixes work); credentials are AES-256-GCM-sealed in a
server-side SQLite store, the browser cookie only ever holds an opaque
session id, and all JMAP traffic is proxied same-origin. Mail is cached
client-side in IndexedDB, so the app works offline and installs as a PWA. Set
`PUBLIC_APP_NAME` and the UI, page titles and install manifest follow your
branding. There's a [Stalwart template](https://railway.com/deploy/stalwart)
on Railway too — deploy both for a complete self-hosted mail stack.

## Common Use Cases

- Give a self-hosted Stalwart server the webmail UI it doesn't ship with
- Small teams and families running their own mail who want a fast, modern
  client with contacts, calendars and vacation responses
- White-labeled webmail for agencies or hosting providers — set
  `PUBLIC_APP_NAME` and it's your product

## Dependencies for Stalwart Webmail Hosting

- A running Stalwart mail server (or any JMAP server that accepts HTTP Basic
  auth) — this is a client, it does not run a mail server
- Everything else is bundled: one service, one volume, no database to manage

### Deployment Dependencies

- [Self-hosting guide](https://github.com/nomideusz/zaur/blob/main/apps/webmail/docs/self-hosting.md)
- [Source on GitHub](https://github.com/nomideusz/zaur) (`apps/webmail`)
- [Stalwart mail server](https://stalw.art) — pair with the
  [Stalwart template](https://railway.com/deploy/stalwart)

### Implementation Details

**Recommended: Stalwart OAuth.** With OAuth the server stores revocable
tokens instead of the password:

1. In Stalwart, register an OAuth client — redirect URI
   `https:///api/auth/oauth/callback`, PKCE S256.
2. Set `STALWART_OAUTH_ENABLED=true`, `STALWART_OAUTH_ISSUER_URL` (usually
   your JMAP URL) and `STALWART_OAUTH_CLIENT_ID`.
3. Password sign-in disables itself automatically.

Notes:

- Calendars, quotas and vacation responses are feature-probed, so the client
  degrades gracefully with your server configuration.
- Token-only JMAP servers (Fastmail) are not yet supported for sign-in.
- Signup and password-reset flows stay hidden unless you wire the optional
  register service — manage accounts in Stalwart directly.
- `PORT=3000`, `HOST=::` (dual-stack for Railway networking) and
  `RAILWAY_RUN_UID=0` (volume write access) are pre-configured — leave them
  as they are.

## Why Deploy Stalwart Webmail on Railway?

Railway is a singular platform to deploy your infrastructure stack. Railway
will host your infrastructure so you don't have to deal with configuration,
while allowing you to vertically and horizontally scale it.

By deploying Stalwart Webmail on Railway, you are one step closer to
supporting a complete full-stack application with minimal burden. Host your
servers, databases, AI agents, and more on Railway.


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- [Foundry Virtual Tabletop](https://railway.com/deploy/X5tR6G) — A Self-Hosted & Modern Roleplaying Platform
- [Letta Code Remote](https://railway.com/deploy/letta-code-remote) — Run a Letta Code agent 24/7. No inbound ports, just deploy.

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