Mailu
6.1#19 in mail server softwareFree planFree planWebAPILinuxSelf-hosted
VisitMailu vs SmarterMail
SmarterMail
7.4#3 in mail server softwareFrom $500 a yearFree planAndroidiOSWebLinux
VisitWhat both publish
| Fact | Mailu | SmarterMail |
|---|---|---|
| Deployment | Mailu runs as Docker containers and documents Docker Compose and Kubernetes deployment options. | SmarterMail is available for Linux and Windows and has a Docker version; the download page lists supported Linux distributions and Windows Server 2016, 2019, 2022, and 2025+. |
| Integrations | The documentation describes Nextcloud authentication through IMAP and calendar and address-book access through Radicale using WebDAV/CardDAV/CalDAV clients. | The Marketplace lists Dropbox, Google Drive, OneDrive, ownCloud, LeitzCloud, Rocket.Chat, ChatGPT, Collabora Online, and OnlyOffice integrations. |
| Product | Mailu is a free software mail server distributed as a set of Docker images. | SmarterMail is an email, groupware, and collaboration server positioned as an alternative to Microsoft Exchange. |
| Security | Listed security features include enforced TLS, DANE, MTA-STS, Let's Encrypt, outgoing DKIM, antivirus scanning, and blocking malicious attachments. | The product includes spam filtering and enterprise-level antivirus, with Message Sniffer available as an integration. |
Mailu plans
- MailuFree
SmarterMail plans
- SmarterMail FreeFree
- SmarterMail High Availability — Hub$150 a month
- SmarterMail High Availability — Node$250 a month
- SmarterMail Professional (50 mailboxes)$500 a year
- SmarterMail Enterprise (50 mailboxes)$700 a year
Pick Mailu if…
You want what its maker publishes above — check its page for the details.
Pick SmarterMail if…
You want what its maker publishes above — check its page for the details.