Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I've a virtual server not a ksm but with lighttpd and mysql and postfix. Can I use it to replace my existing free webmail and what is a good software? I also want to use pgp if it's possible?

share|improve this question
What are your other requirements besides GPG support? There's tons of webmail applications available. – gertvdijk Dec 25 '12 at 12:06
I'm new to gpg support and I wonder how it would work in a hybrid environement? I don't know much people using GPG and I wonder why the free webmailer doesn't support it because it's already 2013? – Betterdev Dec 25 '12 at 12:18

Squirrelmail has everything you're asking for.

squirrelmail screenshot

Has good plugin support for pgp as well.

share|improve this answer

Horde's IMP features GPG/PGP encryption as well as S/MIME support. It's rather a somewhat more complex framework (in which IMP is just one application), but in my opinion, it has a fairly high quality standard and good user experience compared to most other open source webmail software.


Horde Portal Screen

share|improve this answer

Rainloop, hands down. Website here. Screenshot below.

enter image description here

share|improve this answer
This is commercial software for which the standard version is not free, nor open source. – Anthon Apr 9 at 10:56
@anthon this software is released under the GNU affero GPL and is free for non commercial use. I believe that makes it qualify on both fronts. – terdon Apr 9 at 16:40

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.