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Bloatware. Slow and unreliable (too many DB crashes) See More
Each contact can have their e-mail address, phone number, location, photos and associated URLs added to them. You can then group contacts and address your mails to the group instead of having to enter each person separately. Additionally, you can import vCards and CSV files as contact information. And, it has LDAP connectors. See More
Unfortunately, all interfaces of roundcube look very old. I hope there will be a progress soon, Google Mail and Outlook Webmail should be the role models here. But also Yahoo mail offers an intuitive design. If this open source software should survive, it must be completely renewed and bring up to new standards. See More
Roundcube allows third-party plugins and has a temporary plugin repository (until [the official plugin repository] (http://plugins.roundcube.net/) comes out of beta) with over a hundred plugins available, covering authentication, improved security and settings among many others categories. See More
Installer is broken. Over 600 bugs on github, none getting addressed. Not worth your time. See More
RainLoop caches messages to allow quicker access to your mailbox and to alleviate the strain put on the server. You can choose to disable it completely if you don't want it. Or, you can configure cache settings such as an additional caching key, browser-level cache, caching message user IDs while searching, etc. Even changing memcache hosts and ports and caching system data is possible. See More
RainLoop has an easy to use plugin system. You can find the full list of plugins in the admin panel (or see their code on GitHub). From the admin panel, you can, in a simple, user-friendly way, manage them - install, uninstall, update. Unfortunately, a number of plugins and the related documentation, currently, is somewhat lacking. See More
There are 2 different versions of Rainloop. A "community" version is licensed under AGPLv3 allowing it to be integrated with all open source software, while a "standard" version is licensed under the "RainLoop Software License" which is defined here. See More
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. See More
It's awful. Search is limited, it's often out of sync with IMAP, the UI for moving items between folders is cruddy. See More
Zimbra doesn't much work with its host platform as much as it brings its own copies of utilities. If you want something small and "plays well with others" integratable...this is not it. Too heavy to run on a RaspberryPi if you're looking for something for just a few users. See More
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