Resources - Electronic Mail software

See also:  Filtering applications

Balsa
https://pawsa.fedorapeople.org/balsa/

Balsa is an eMail client for GNOME that is highly configurable and incorporates all the features most people expect from a robust mail client.

Becky! Internet Mail
https://www.rimarts.co.jp/becky.htm

Becky! Internet Mail is a ShareWare eMail client application written in C++ for Microsoft Windows developed by RimArts, Inc., in Shin-Matsudo, Matsudo City, Chiba, Japan.  Becky! was originally released in 1996 as Becky! Version 1, and then it was rewritten in the early 2000s and Becky! Version 2 was released in 2004, which remains RimArts' flagship product, receiving periodic updates (including for Windows 10 and newer).

Becky! achieved early success in East Asia due to excellent support for CJKV characters, and its ability to handle many languages also created interest throughout Europe, as evidenced by the translations to French and German by volunteers (who also created an extended help file, and assist by administering the support forum).

Claws Mail - the user-friendly, lightweight, and fast eMail client
https://www.claws-mail.org/

Claws Mail is a free and open-source, C/GTK-based eMail client, which is both lightweight and highly configurable fork of Sylpheed.  Claws Mail runs on both Windows and Unix-like systems such as Linux, BSD, and Solaris.  It stores mail in the MH mailbox format, and plugins facilitate interoperability with HTML-formatted eMail messages.

Some of the key features include quick response, graceful and sophisticated interface, easy configuration, intuitive operation, extensibility, robustness, and stability.  The appearance and interface are designed to be familiar to new users coming from other popular email clients, as well as experienced users.  Almost all commands are accessible with the keyboard.

eM Client - skyrocket your productivity
https://www.emclient.com/

eM Client is a desktop eMail client for Windows and MacOS.  It features sending and receiving eMail messages, and managing calendars, tasks, contacts, notes, and XMPP-based communicators.

Features for handling eMail include advanced rules management, mass eMailing, delayed send, and a built-in translator for incoming and outgoing messages.  It also supports signatures, Quick Text, and tagging-and-categorization for easy searching, plus direct cloud-based file sharing services for handling large file attachments.

Epyrus Mail
http://www.epyrus.org/

Epyrus, which was first conceived of sometime around March or April of 2022, is an open-source eMail client application that aims, in a broad sense, to be fairly easy for people who are used to working on Pale Moon to start contributing (which is encouraged on a per-issue basis).

Some of the key features include low system resource usage, easy configuration, intuitive operation, extensibility by way of support of plug-ins and extensions, and reliability.

Mailbird - we strive to make your email experience fly
https://www.getmailbird.com/

Mailbird is a desktop eMail client for Microsoft Windows that's compatible with MS-Windows 7 and all newer versions.  As well as sending and receiving eMail, Mailbird includes managing calendar events and contacts from different eMail providers, social media, task management, file share, and video-conferencing integrations.

Although Mailbird is offered via paid subscription, it also includes a free version.  An award-winning desktop eMail management client for Windows 11, 10, 8 and 7, from humble beginnings in 2012, Mailbird has grown to become one of the world's top 10 email management clients by 2024, serving more than 200,000 customers worldwide.

Mailspring
https://www.getmailspring.com/

Mailspring comes packed with powerful features like Unified Inbox, Snooze, Send Later, Mail Rules, Templates, and so much more (including an optional professional version called Mailspring Pro, which has even more features).  All of these features run locally in the client -- Mailspring does not send your email credentials to the cloud.

Mailspring is a new-and-improved version of the discontinued Nylas Mail client, maintained by one of the original authors of Nylas Mail.  It's faster and leaner because it replaces the JavaScript sync code in Nylas Mail with a new C++ synchronization engine based on the Mailcore2 library.  It uses roughly half the RAM and CPU of Nylas Mail, and idles with almost zero "CPU Wakes," which translates to great battery life.  It also has an entirely revamped composer, along with other great new features.

Mozilla Thunderbird
https://www.thunderbird.net/

Mozilla Thunderbird is free and open-source eMail client software which also functions as a full personal information management system, with native support for calendars and contacts, an RSS feed reader, chat client (IRC/XMPP/Matrix), and news (NNTP/Usenet) client.

Available cross-platform, Thunderbird is operated by the Mozilla Foundation's subsidiary, MZLA Technologies Corporation.  Thunderbird is an independent, community-driven project that is managed and overseen by the Thunderbird Council, which is elected by the Thunderbird Community (the project strategy was originally modeled after that of Mozilla's Firefox web browser, and is an interface built on top of that web browser).

OE Classic - perfect replacement for Outlook Express
https://www.oeclassic.com/

OE Classic is an eMail and NNTP Usenet Newsgroup reader designed to be a perfect replacement for Microsoft Outlook Express, Windows Mail, Windows Live Mail, etc.

The ultimate goal of OE Classic is to be an easy to use, fast, small and secure program with lots of power features and yet, easy to use for a beginner.  Your data always belongs to you as it is stored in a public-domain format and there are no storage size limits.

Pegasus Mail
https://www.pmail.com/

Pegasus Mail is a free, standards-based, electronic mail client suitable for use by single or multiple users on single computers or in local area network environments (and also integrates well into Novell's NetWare in both Bindery and Directory Services modes).  A proven product, serving millions of users for almost two decades, it is extremely feature-rich and powerful, yet remains small and fast.

HTML eMail messages, which are often used by spammers to track user activity (this is commonly viewed as an invasion of privacy), can contain references to external files (such as pictures).  Pegasus Mail never attempts to download external files when viewing HTML eMails, thus by way of this mechanism spammers can't determine if you've ever viewed their spam.

*** IMPORTANT NOTE ***

The Lumber Cartel wholeheartedly and enthusiastically approves of Pegasus Mail because, in addition to explicitly prohibiting spamming in the licensing terms and conditions, the explanation that "...spam is obviously a social problem, not a technical one..." is included in the documentation, which indicates that the author - David Harris - understands the underlying fundamental nuances of the efforts faced by spam-fighters in counteracting the global spam problem.

Scribe eMail Client
https://www.memecode.com/scribe/

Scribe is a small portable eMail client with an intergrated contact database and calendar.  It supports all the major internet mail protocols and uses international standards where possible.  Scribe doesn't required installing or uninstalling and can be used from a removable drive without reconfiguration.  Also included is a Bayesian spam filter, and translations to many different languages, and updates are published regularly to respond to requests and to add features.

Because Scribe runs on the MS-Windows, MacOS, and Linux Operating Systems, this means that you can take your eMail with you when you even when changing to a different Operating System.  Users also needn't worry about viruses because Scribe protects eMail's from the usual security holes in other eMail clients with it's own virus-resistent HTML viewer and executable attachment protection included.

Sylpheed
https://sylpheed.sraoss.jp/en/

Sylpheed is an open source eMail and usenet/news application that offers easy configuration and an abundance of features.  It stores eMail in the MH Message Handling System, and runs on Unix, Linux, Apple MacOS X, and Microsoft Windows.

Sylpheed provides intuitive user-interface, and is also designed for keyboard-oriented operation, so Sylpheed can be widely used from beginners to power users.

Vivaldi
https://www.vivaldi.com/features/mail/

Vivaldi mail is a powerful eMail client made for high-volume inboxes.  This powerful eMail client is built into the Vivaldi web browser, offering a focused eMail experience by managing all your accounts in one user-friendly inbox.

There are two counters next to folders in Vivaldi Mail:  Brand new eMail messages that have never been seen before are called Unseen; and eMail messages that you have seen but not dealt with are Unread.

Zimbra Desktop - keep your business data secure and private in an open platform
https://www.zimbra.com/zimbra-desktop-download/

Zimbra Desktop is an offline eMail client that runs locally on your computer.  It supports Zimbra Mail, Yahoo! Mail, Inter-Corporate Mail, GMail, Outlook, and any other work or personal eMail account over standard internet protocols, namely POP3 and IMAP4.

The main Zimbra eMail and Collaboration web site, which is operated as a Syncor product, can be accessed directly at https://www.zimbra.com/.

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