Portable, extendable, zero-config email server for JVM and Ruby


Self-contained command line installer for Linux/BSD or MacOS


Just copy and run. Only dependency is Java. Need to port your app to another server? - Just copy it.


No need to learn a voodo magic. Install it with one simple command. Use WebUI to update configuration or add users.


NikaMail is written with JRuby. Developers can write Java and JRuby extensions.

Email Automation

Handle reports or any messages automatically using power of Ruby


NikaMail supports StartTLS and DKIM signing. Public services like GMail won't put it into spam unless your message is a spam

Open Source

NikaMail is absolutely free for personal or commercial use.

CC-BY-SA 4.0

NikaMail software and materials are licensed under a permissive license. Check out following link for information:

Creative Commons Attribution-ShareAlike 4.0 International Public License