When comparing PrivMX WebMail vs Mu4e, the Slant community recommends Mu4e for most people. In the question“What are the best self-hosted webmail clients?” Mu4e is ranked 4th while PrivMX WebMail is ranked 6th. The most important reason people chose Mu4e is:
The UI is designed to allow for quick keystrokes to get around and is pretty clean. Header View: ![](http://www.djcbsoftware.nl/code/mu/mu4e-2.png) Message View: ![](http://www.djcbsoftware.nl/code/mu/mu4e-3.png)
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Pros
Pro Very easy to install
Easy install and did not conflict with postfix dovecot roundcube system on FreeBSD.
Pro UI optimized for speed
The UI is designed to allow for quick keystrokes to get around and is pretty clean.
Header View:
http://www.djcbsoftware.nl/code/mu/mu4e-2.png
Message View:
Pro Asynchronous
Heavy actions never block emacs, unlike most other emacs email clients.
Pro Fully Search Based
Mu4e has no folders or other organizational tools, rather it relies on very fast search queries to help you find your mail.
Pro Can write rich text emails
Using the (beta) org mode, Mu4e can compose fully rich text emails.
Pro Built-in Autocomplete
Doesn't require you to import address books for autocomplete, learns from your emails just like Gmail.
Cons
Con Can't send regular email
This appears to be completely standalone system, only users of PrivMX can send and receive mail from other users with PrivMX. You can't send email to regular @ email addresses, or presumably receive email from them either.