The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning. Learn more →
Top 19 Mailserver Open-Source Projects
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docker-mailserver
Production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) running inside a container.
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
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inbucket
Disposable webmail server (similar to Mailinator) with built in SMTP, POP3, RESTful servers; no DB required.
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docker-postfix
Simple SMTP server / postfix null relay host for your Docker and Kubernetes containers. Based on Alpine Linux.
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WorkOS
The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
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power-mailinabox
A Mail-in-a-Box with extra capabilities and more customizability. Not just for power users!
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milter-manager
milter manager is a free software to protect you from spam mails and virus mails effectively with milter.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
I can recommend Docker mailserver (it also works with Podman). It is already pretty lightweight but you can even make it lighter and it has an active community as well as regular updates.
I've been running mailcow [1] on a Hetzner cloud server for a few years and am pretty happy with it.
[1] https://mailcow.email
Project mention: Roundcube and docker-mailserver (Docker Mailserver) on the same VPS | /r/selfhosted | 2023-12-06Consider installing Mailu instead, which is a single Docker container with a full mail server and Roundcube on top. Very easy to install.
Yeah thanks for this, I’ve been using it for years! Recently switched to mailslurper:
https://github.com/mailslurper/mailslurper
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- Zimbra Alternatives
- Windows to Docker: Mail Servers?
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A note from our sponsor - WorkOS
workos.com | 25 Apr 2024
Index
What are some of the best open-source Mailserver projects? This list will help you:
Project | Stars | |
---|---|---|
1 | docker-mailserver | 13,292 |
2 | Mailcow | 7,931 |
3 | Mailu | 5,419 |
4 | inbucket | 1,548 |
5 | mailslurper | 1,372 |
6 | chasquid | 845 |
7 | docker-postfix | 469 |
8 | dmarc-srg | 190 |
9 | power-mailinabox | 158 |
10 | AnsiMail | 153 |
11 | poste.io | 133 |
12 | mailserver | 124 |
13 | bitmaelum-suite | 61 |
14 | milter-manager | 51 |
15 | mxcheck | 46 |
16 | erooster | 45 |
17 | gop-3 | 10 |
18 | postmaster | 7 |
19 | sw_mailcow | 3 |
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