Bulwark Webmail Hosting Live In 5 Minutes

Bulwark Webmail hosting on xCloud gives your own mail server a self-hosted JMAP webmail client with mail, calendar, contacts and files in one browser interface. Deploy Bulwark Webmail from the OneClick catalog, enter the HTTPS address of your JMAP server such as Stalwart, and xCloud starts the pinned container, generates the admin dashboard password, mounts a data volume and publishes the client over HTTPS. It stores no mail itself.

Deploy your Bulwark Webmail

No terminal
No technical skills needed
No lock-in, cancel anytime

What is Bulwark Webmail?

Bulwark Webmail is a self-hosted webmail client for Stalwart Mail Server. Its README says it talks to Stalwart over JMAP and puts mail, calendar, contacts and files behind one login, with one set of settings and one admin dashboard, plus threading, Sieve filters, S/MIME, CalDAV subscriptions and vCard import. Self-hosted Bulwark Webmail is a self-hosted JMAP webmail client you run yourself, in place of a hosted webmail such as Gmail's. It is licensed under AGPL v3 only, with an additional permission for app stores.

On xCloud this template deploys Bulwark Webmail 1.12.0 as the official image, pinned by digest, in a single container with no database, behind HTTPS on your domain. The bulwark_data volume holds its settings. It has no mailboxes of its own: users sign in with accounts from your separate JMAP server, whose address you enter at install and whose CORS settings must allow this site's domain.

From Sign-Up to a Live Bulwark Webmail In Just 3 Easy Steps

Self-hosting a JMAP web client normally means a container, a domain, a certificate and CORS configuration before anyone can check mail. This is the same result without assembling any of it.

Step 01
Sign Up
Create your xCloud account, pick Bulwark Webmail from the OneClick catalog, choose a domain, and enter the HTTPS URL of your existing JMAP mail server, such as Stalwart.
Step 02
We Deploy It For You
One click. We bring up the pinned Bulwark Webmail 1.12.0 image, generate the admin dashboard password, and publish it over HTTPS on your domain — a single container with no database.
Step 03
Allow Your Domain And Sign In
Save the admin password shown in the protected installation credentials, allow your new domain in the mail server's CORS settings, then open the HTTPS Bulwark URL and sign in with a mailbox address and password.

Everything Bulwark Webmail Does, On Your Own Server

The full Bulwark edition runs here — mail, calendar, contacts, files and the admin dashboard in one browser client, on infrastructure you control.

Fast Browser Mail Client
Give users of your existing JMAP mail server a fast, modern browser client instead of a bare protocol they have to configure themselves.
Calendar, Contacts And Files Too
Mail, calendar, contacts and files sit behind one login, so people aren't switching between separate tools for each.
Works With Your Existing JMAP Server
Point Bulwark at the Stalwart (or other JMAP) server you already run — it is a client, not a mail server of its own.
Admin Dashboard For Branding, Policies And Plugins
A built-in admin dashboard covers branding, policies and plugins, protected by a generated admin password.
Light Enough For A Small Server
A single container with no database behind it — measured idle use on QA was about 80 MiB.
Settings And Audit Log Persist
Admin settings and the audit log live in a persistent volume and survived a container restart in QA.

Everything You Need To Run Your Webmail 24/7

Managed hosting for Bulwark Webmail, so the parts that keep it online are not your problem.

Bulwark Webmail 1.12.0 deployed instantly
Single container, no database to manage
Telemetry and update checks disabled
Built-in admin dashboard
Free SSL certificate
Server backups and snapshots
Server security updates included
30+ server locations
Unused balance refunded

What You Can Do With Bulwark Webmail

Give a Stalwart server a modern web interface
An operator running Stalwart adds Bulwark so users read mail, manage a calendar and keep contacts in one browser client, instead of using a separate app for each.
Filter and search mail with Sieve and full-text search
A user threads conversations in a unified inbox, searches the full text of their mail and sets Sieve filters from the client, with the rules kept on the JMAP server.
Run a branded webmail for your domain
A small company hosts webmail at its own address with an admin dashboard for settings and policy, so staff sign in on a page the company controls.
Use one login for mail, calendar and files
A team shares a calendar through CalDAV subscriptions, sends iMIP invitations and uses Stalwart's file storage from the same client, with two-factor sign-in where it is enabled.

Bulwark Webmail vs Alternatives

Gmail: Gmail is a hosted mail service with its own web client. Bulwark is only a client for a JMAP server you run, so mailboxes, storage and delivery are yours to provide, and it adds no mail hosting itself.
Roundcube: Roundcube is a separate webmail client with its own OneClick page, built around IMAP. Bulwark talks JMAP to Stalwart, so choose it when your mail server speaks JMAP.
SnappyMail: SnappyMail is another separate webmail client with its own OneClick page and its own server requirements. Pick Bulwark for its JMAP, calendar and contacts integration with Stalwart.
SOGo: SOGo is a groupware server with its own OneClick page that bundles mail, calendar and contacts. Bulwark leaves mailboxes to your own JMAP server and supplies only the browser client.

Simple Pricing. Everything Included.

Dedicated Cloud VPS sizes, pre-configured for Bulwark Webmail hosting. Pick the one that fits, and resize any time.

Cloud VPS 6 GB

Cloud VPS 16 GB

More mailbox users, more concurrent sessions.

$59.99per month

16 GB RAM
6 vCPU cores
200 GB NVMe SSD
30 TB
Unlimited

Get started

Cloud VPS 24 GB

Bulwark alongside your Stalwart server and other apps.

$84.99per month

24 GB RAM
8 vCPU cores
300 GB NVMe SSD
30 TB
Unlimited

Get started

Every size is a dedicated Cloud VPS we provision, patch, monitor and restore. Billed monthly with no lock-in — delete the server and the unused balance comes back to your account. Bulwark Webmail itself is free under the AGPL-3.0 licence.

Docker hosting

Already Have a Server? Bring Your Own

Connect any VPS — DigitalOcean, Vultr, Linode, AWS, Hetzner or bare metal — and deploy Bulwark Webmail on it through the same panel, for a per-server management fee instead of a Cloud VPS rental.

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$4per server / month

6–10 servers
Unlimited sites
All features included
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Agency

The same platform, discounted at 11+ servers.

$3per server / month

11+ servers
Unlimited sites
All features included
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Priced per connected server, so your rate adjusts automatically as you add or remove servers. You pay your own provider for the server itself.

Self-managed hosting

Ready To Own Your Webmail?

Bulwark Webmail on xCloud runs on a dedicated Cloud VPS that we provision, patch, monitor and restore. Deploy faster. Own the server. Stay in control.

Fast Provisioning
Deploy faster using an xCloud Managed Server built with optimized stacks and high-speed SSDs.
Enterprise-grade security
Protect your infrastructure with a free SSL certificate and more advanced security features at no additional cost.
Intuitive Control Panel
From Server creation to application deployment, everything can be managed from our intuitive control panel.

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Frequently Asked Questions

Feel free to contact us with any questions or concerns you may have.

Is Bulwark Webmail free?

Yes. Per its README it is licensed under the GNU AGPL v3 only, with an additional permission to distribute apps built from the code through app stores, which upstream says is provisional. The licence file is linked from this page at the pinned 1.12.0 tag. xCloud bills for the Cloud VPS under it, not for Bulwark.

Can you run Bulwark Webmail with Docker?

Yes, and this Bulwark Webmail Docker hosting template does it for you: the official ghcr.io/bulwarkmail/webmail image, pinned by digest, runs as one container with no database on your own server, not in a Bulwark Webmail cloud account, with HTTPS in front of port 3000. You supply the JMAP server it connects to.

How much RAM does Bulwark Webmail need?

Bulwark's manifest floor is 512 MB RAM, one CPU core and 3 GB disk, and there is no database because mail stays on your JMAP server. Sold here as the 6 GB tier, it has plenty of room for other apps on the server.

Does Bulwark Webmail include a mail server?

No. It is only a client: it stores no mail and has no mailboxes of its own, and users sign in with accounts from a separate JMAP server, whose HTTPS address you enter at install. That server must be running, reachable from this Cloud VPS, and responsible for storage, delivery and backups.

Does Bulwark Webmail work with Stalwart?

Yes, that is its target: upstream describes it as a webmail client for Stalwart Mail Server over JMAP, covering mail, calendar, contacts and files. Other JMAP servers may work but this page does not test them, so confirm sign-in against your server before relying on it.

Why does Bulwark Webmail need CORS on my mail server?

Because the browser talks to the JMAP server directly. Your mail server must allow this site's domain in its Access-Control-Allow-Origin settings, or sign-in fails in the browser. If it uses a private or self-signed certificate, set NODE_EXTRA_CA_CERTS in the Environment editor so the container trusts it.

Does Bulwark Webmail support calendar and contacts?

Yes. Upstream lists a calendar with month, week, day and agenda views, recurring events, iMIP invitations and CalDAV subscriptions, and contacts with several address books, groups and vCard import and export. They rely on your JMAP server, so check that server supports them before promising them to users.

How do I back up Bulwark Webmail?

Include the bulwark_data volume in your backup, which holds Bulwark's own settings and admin data. Your mail is not in it: mailboxes, calendars and contacts live on your JMAP server, so that server needs its own backup. Keep the session secret and admin password in your notes, and test a restore.

Backup and restore Docker apps

How do I upgrade Bulwark Webmail?

Upgrades are not automatic. The template pins 1.12.0 by immutable digest, and existing installs stay on it until you update them. When a newer template version is published, back up the bulwark_data volume, check the upstream release notes, then adopt that version. Telemetry and update checks are switched off in this template.

How do I reset the Bulwark Webmail admin password?

The admin dashboard password at /admin/login is read only on the first start, so editing it later does nothing. Change it from the dashboard itself. Note that by default a Stalwart administrator can sign into the dashboard without that password, unless you set STALWART_ADMIN_ACCESS=password.

Who can reach my Bulwark Webmail site?

The sign-in page is public, but every mailbox needs valid credentials on your JMAP server. For an extra layer you can add Basic Auth at the reverse proxy, which this template does not enable. Remember the admin dashboard path, and restrict it if the Stalwart admin shortcut is a concern.

Can I cancel anytime?

Yes. There is no lock-in — cancel any time. Hosting is billed monthly and charged for what you actually use, so when you delete the server the unused balance is refunded to your account, less up to 10% in payment-processing fees.