1
Docker Mailserver
docker-mailserver.github.io/docker-mailserver/…Run an SMTP and IMAP mail server with Docker Mailserver, which includes LDAP, anti-spam, and anti-virus components.
Alternatives
The Best Stalwart Alternatives in 2026
5 alternatives
Looking for something like Stalwart? Here are 5 alternatives, ranked by how closely they match it on purpose, features and platforms.
Stalwart provides mail and collaboration server software supporting IMAP, JMAP, SMTP, CalDAV, CardDAV, and WebDAV.
Top picks at a glance
First suggestionDocker MailserverRun an SMTP and IMAP mail server with Docker Mailserver…Another optionStalwartRun email, calendar, contact, and file services with…
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | Docker Mailserver | — | Not stated | Web |
| 2 | Stalwart | — | Not stated | Web |
| 3 | iRedMail | — | Not stated | Linux, Web |
| 4 | Proxmox | — | Not stated | Web |
| 5 | Mail-in-a-Box | — | Not stated | Web |
All Stalwart alternatives
2
Stalwart
stalw.artRun email, calendar, contact, and file services with Stalwart, an open-source collaboration server.
3
iRedMail
iredmail.orgSet up an open-source mail server with iRedMail on supported Linux and BSD systems.
4
Proxmox
proxmox.comDeploy server, backup, and mail solutions with Proxmox open-source server products.
5
Mail-in-a-Box
mailinabox.emailSet up a personal mail server with Mail-in-a-Box, an easy-to-deploy server package.
No alternatives match this filter.
Alternatives to similar tools
Docker Mailserver17 alternativesProxmox7 alternativesMail-in-a-Box6 alternativesiRedMail7 alternatives
What is the best alternative to Stalwart?
Based on features, tags and platforms, the closest alternatives to Stalwart are Docker Mailserver, Stalwart, and iRedMail.
Alternatives are suggested from the purpose and features described in our listings. Different pages for the same product appear once. Read each description to check whether it fits your task. How we choose alternatives · Suggest an alternative