42 of the Best Free Linux Email Software

Last Updated on October 10, 2018

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Email is arguably one of the most popular and useful functions of a Linux system. Fortunately, there is a wide selection of free email software available on the Linux platform which is stable, feature laden, and ideal for personal and business environments. Send and receive emails, run a mail server, filter spam, administer a mailing list are just some of the options explored in this article.

To provide an insight into the quality of software that is available, we have compiled a list of 42 high quality Linux email applications, covering a broad spectrum of uses. There’s a mix of desktop and server based applications included. Hopefully, there will be something of interest for all types of users.

Now, let’s explore the 42 email applications at hand. For each title we have compiled its own portal page, providing a screenshot of the software in action (where appropriate), a full description with an in-depth analysis of its features, together with links to relevant resources and reviews.

Email Software
Claws MailLightweight yet powerful and full-featured client
ThunderbirdPopular free, cross-platform e-mail, RSS and newsgroup client
KMailEmail component of Kontact, a integrated personal information manager
BalsaEmail client for GNOME
SylpheedSimple, lightweight client
AlpineAlternatively Licensed Program for Internet News and Email
Coneconsole newsreader and emailer
PineTool for reading, sending, and managing electronic messages
muttSmall but very powerful text based client
SquirrelMailWebmail package written in PHP
RoundCubeBrowser-based multilingual IMAP client
ScalixE-mail and groupware server
EvolutionProvides integrated mail, addressbook and calendaring functionality
OpenGroupware.orgCollaborative software server for multiple clients
ZimbraZimbra Collaboration Suite
CourierIntegrated mail/groupware server
DBMailEnables storing and retrieving mail messages from a database
DovecotSecure POP3 server that supports mbox and maildir mailboxes
EximHighly configurable mail transfer agent
PostfixPopular mail transfer agent
qmailWritten as a more secure replacement for the Sendmail program
SendmailMail transfer agent for sophisticated mail configurations
fetchmailSSL enabled POP3, APOP, IMAP mail gatherer/forwarder
getmailFlexible, extensible mail retrieval system
Postfix AdminManage mailboxes, virtual domains and aliases
MailWatchWeb-based front-end to MailScanner written in PHP, MySQL and JpGraph
EnigmailOpenPGP Email Security for Mozilla Applications
GnuPGEncrypt and sign data and communication
MailcryptSimple interface to public key cryptography with PGP
maildropMail delivery agent with a mail filtering language
MailScannerVirus scanner and spam detector
PostgreyPostfix policy server implementing greylisting
procmailMail delivery agent
SpamAssassinPerl-based spam filter using text analysis
SpamBayesBayesian anti-spam classifier written in Python
Vipul's RazorSpam-catcher using a collaborative filtering network
CheckGmailGmail Notifier
GMail NotifierAn alternative to CheckGmail
Mail NotificationMonitors multiple mailboxes for new mail
ezmlm-idxHighly automated mailing list manager
MailmanManage electronic mail discussion and e-newsletter lists
MajordomoPerl based mailing list manager
Best Free and Open Source SoftwareRead our complete collection of recommended free and open source software. Our curated compilation covers all categories of software.

The software collection forms part of our series of informative articles for Linux enthusiasts. There are hundreds of in-depth reviews, open source alternatives to proprietary software from large corporations like Google, Microsoft, Apple, Adobe, IBM, Cisco, Oracle, and Autodesk.

There are also fun things to try, hardware, free programming books and tutorials, and much more.
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