Porcupine logo. I believe we got a permission from Porcupine Cafe in NC way back ago. I hope this permission is still valid.

Porcupine mail server

Porcupine is a cluster-based email server that's fast, manageable, and available. Unfortunately, Porcupine is pretty much dead both as a research project and software (a typical fate of a phd project...). I collected what remains of the project in this page.

FAQ:

Q: I want to use Porcupine in my ISP/company/blah.
I'd suggest against it. Porcupine is unsupported. Besides, it lacks many features you need in modern email server (e.g., spam filtering, LDAP integration, etc, etc).
Q: Is anyone using Porcupine?
No. I hear that some company trying to commercialize it, but I can't comment on that...