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4.7 star rating
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What is the best alternative to AfterLogic WebMail?
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Mu4e
All
5
Experiences
Pros
5
Top
Pro
UI optimized for speed
The UI is designed to allow for quick keystrokes to get around and is pretty clean. Header View: Message View:
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Pro
Asynchronous
Heavy actions never block emacs, unlike most other emacs email clients.
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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.
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Pro
Can write rich text emails
Using the (beta) org mode, Mu4e can compose fully rich text emails.
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Pro
Built-in Autocomplete
Doesn't require you to import address books for autocomplete, learns from your emails just like Gmail.
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67
3
RainLoop
All
30
Experiences
Pros
17
Cons
13
Top
Con
Abandoned
Use Snappymail instead which replaces this. It is bad to be recommending RainLoop in 2023
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Pro
Two-factor authentication
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Con
Lack of API documentation
Most "closed" open source ever seen.
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Pro
No database backend (except for contacts)
Except for contacts (which are optional), RainLoop does not require a database to run, allowing for easier management and configuration.
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Con
Very little bug fixes
Bugs aren't getting fixed.
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Pro
Easy to apply your own branding
Not only can you change the title, description and logo with a simple form in the admin panel, you can also completely customize the look of the login screen by supplying your own custom stylesheet.
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Con
Small community
No community forums, etc. This makes it difficult to find community help or just discuss techniques.
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Pro
Good UI
Good UI make it a pleasing experience
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Con
Lack of documentation on plugin development
RainLoop sends the user to a plugin example that is nonexistent (which they state will be filled in later), which means the user has to figure out what the process is on their own.
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Pro
Free for personal and non-profit use
RainLoop is licensed under Creative Commons. Commercial use costs $85/yr.
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Con
Slow development
As of writing, the last update is quite a while ago. New features/security is not updated regularly
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Pro
Client-side OpenPGP
RainLoop supports an easy to use client-side OpenPGP encryption. It allows setting up, importing and generating keys from the admin panel. OpenPGP keys are stored in the browser's local storage.
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Con
Too many js and ajax calls
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Pro
Easy to update
RainLoop can be updated from the admin panel. It does not require manually downloading, overwriting or configuring anything with each update.
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Con
Lack of documentation
Wiki is almost blank and no real installation instructions.
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Pro
Social network authentication
RainLoop integrates with Facebook, Google, and Twitter for authentication. You can find out how to set up each of the services here.
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Con
Free version very limited
You can't change nothing with free version. Neither add your image logo on login screen. You can't change the templates, can't change the form to send mail.
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Pro
Configurable multi-level caching system
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.
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Con
Questionable start
The developer created RainLoop while working at AfterLogic. You can read more about it here.
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Pro
Add multiple accounts
You can add multiple accounts and switch between them.
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Con
No unified account view
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Pro
Keyboard shortcuts
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Con
Security
Missing .htaccess file for the data folder.
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Pro
Dropbox integration
RainLoop allows attaching files from Dropbox. To enable this feature, go to Dropbox's developer apps page to register your app. You'll receive the app key value to enter in the admin panel.
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Con
Raises security concerns since it's written in PHP 
The language itself and the library ecosystem has a bad security track record.
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Pro
Drag & drop support
RainLoop supports attaching files simply by dragging and dropping them in.
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Pro
Multilingual
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Pro
Plugin support
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.
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Pro
Google Drive integration
You can integrate Google Drive via API-Key for selecting attachments.
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Pro
RainLoop plus Xeams
Complimented modern user interface to deliver mail from Xeams. Setting up both applications takes less than an hour on private server.
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Experiences
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239
56
SOGo
All
5
Experiences
Pros
5
Top
Pro
Drag and drop interface
Folders, contacts and events can be moved around with intuitive drag and drop functionality.
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Pro
Calendaring and messaging data can be accessed via web and multiple desktop and mobile clients
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Pro
Microsoft ActiveSync support
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Pro
Localized
Available in 30 languages.
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Pro
Fully responsive
The UI is fully responsive, and works fine on desktop, tablets and phones.
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36
16
Squirrelmail
All
3
Experiences
Pros
2
Cons
1
Top
Pro
Very mature
Squirrelmail has been around for a long time.
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Top
Con
Very old
Squirrelmail has been around for a loooooong time!
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Top
Pro
Has many available plugins
Can do things like change Linux user passwords, configure vacation "out of office" messages, configure procmail .forward files, etc.
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19
11
Mailpile
All
10
Experiences
Pros
10
Top
Pro
Beautiful UI
Uncluttered, highly intuitive, easy to use user interface.
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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.
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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.
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Pro
Secure
Encryption is turned on by default.
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Pro
Portable
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.
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Pro
Free and open source
Licensed under AGPL.
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Pro
Good documentation
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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.
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Pro
Plugin architecture
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Pro
Internationalization support
Mailpile is available in over 40 languages.
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Experiences
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64
34
Zimbra Web Client
All
3
Experiences
Pros
1
Cons
2
Top
Pro
Full-featured collaboration solution
If you are looking for an alternative to Gmail, look no further than Zimbra. While not a complete document solution it does have some document features as well.
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Top
Con
Heavy and monolithic
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.
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Con
Linux only
There is no installator for Windows
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16
15
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