Courier Mail Server
6.4#13 in mail server softwareFree planFree planLinuxSelf-hosted
VisitCourier Mail Server vs SmarterMail
SmarterMail
7.4#3 in mail server softwareFrom $500 a yearFree planAndroidiOSWebLinux
VisitWhat both publish
| Fact | Courier Mail Server | SmarterMail |
|---|---|---|
| Deployment | It can act as an intermediate mail relay, receive mail for multiple domains, or do both. | 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 server can use LDAP, MySQL, or PostgreSQL-based authentication databases and supports LDAP-based mail routing. | The Marketplace lists Dropbox, Google Drive, OneDrive, ownCloud, LeitzCloud, Rocket.Chat, ChatGPT, Collabora Online, and OnlyOffice integrations. |
| Product | Courier is an integrated mail and groupware server providing ESMTP, IMAP, POP3, webmail, and mailing list services. | SmarterMail is an email, groupware, and collaboration server positioned as an alternative to Microsoft Exchange. |
| Security | Courier supports STARTTLS and SSL for ESMTP, IMAP, POP3, and webmail; its ESMTP client can require a certificate signed by a trusted root CA. | The product includes spam filtering and enterprise-level antivirus, with Message Sniffer available as an integration. |
Courier Mail Server plans
- Courier Mail ServerFree
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 Courier Mail Server 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.