When comparing Mailpile vs Mu4e, the Slant community recommends Mu4e for most people. In the question“What are the best self-hosted webmail clients?” Mu4e is ranked 3rd while Mailpile is ranked 4th. 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)
Ranked in these QuestionsQuestion Ranking
Pro Beautiful UI
Uncluttered, highly intuitive, easy to use user interface.
Pro Built-in rock-solid and easy-to-use encryption
Mailpile offers support for OpenPGP and S/MIME encryption and signatures in an easy to use manner.
Pro Theme support
The underlying architecture of Mailpile allows for themes that not only change the visual aesthetic of the client, but layout as well allowing for different UX designs.
Encryption is turned on by default.
The whole webmail client can be carried around on your external device (such as a USB stick) and used without having admin access to install.
Pro Free and open source
Licensed under AGPL.
Pro Good documentation
Pro Fast, scalable search engine
The search engine is at the very center of Mailpile. It was specifically designed to be able to handle large amount of e-mails without grinding the machine to a halt.
Additionally, the search includes a tagging feature that can automatically organize new mail by set rules or bayesian classifiers.
Pro Plugin architecture
Pro Internationalization support
Mailpile is available in over 40 languages.
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.