Email Software for Linux

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  • 1
    SwithMail
    Send SMTP email silently from command line (CLI), or a batch file using Exchange, Gmail, Hotmail, or Yahoo! Plus. Supports XML settings files, variables, or all settings explicitly from the command line. Now supporting Exit Codes for batch file use (will return "0" for successful delivery, or "1" for error delivering) - handle your batch file accordingly.
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    Downloads: 45 This Week
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  • 2

    bogofilter -- Fast Bayesian Spam Filter

    Fast Bayesian spam filter along lines suggested by Paul Graham

    The bogofilter package implements a fast Bayesian spam filter as suggested by Paul Graham in "A Plan For Spam" <http://www.paulgraham.com/spam.html>. It is written in C. Supported platforms: Linux, FreeBSD, Solaris, OS X, HP-UX, AIX, RISC-OS, ...
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    Downloads: 69 This Week
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  • 3
    threadkey

    threadkey

    Add keyboard shortcuts to switch between different thread views

    Strike the 'T' key to sort messages by thread, strike the 'U' key to sort unthreaded again, just like the 'G' key switches to Grouped By Sort view.
    Downloads: 195 This Week
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  • 4
    RainLoop Webmail

    RainLoop Webmail

    Simple, modern & fast web-based email client

    RainLoop Webmail is a modern, fast, and lightweight web-based email client. It supports IMAP and SMTP protocols, allowing users to access and manage their email accounts through a web interface. RainLoop offers features like multi-account support, a responsive UI, and integration with popular email providers. It is self-hosted, giving users control over their email data.
    Downloads: 7 This Week
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  • 5
    Trojitá, a Qt IMAP e-mail client
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    Downloads: 89 This Week
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  • 6
    Mail-in-a-Box

    Mail-in-a-Box

    Take back control of your email with this mail server in a box

    Mail-in-a-Box helps individuals take back control of their email by defining a one-click, easy-to-deploy SMTP+everything else server, a mail server in a box. Mail-in-a-Box lets you become your own mail service provider in a few easy steps. It’s sort of like making your own gmail, but one you control from top to bottom. Technically, Mail-in-a-Box turns a fresh cloud computer into a working mail server. But you don’t need to be a technology expert to set it up. Our goals are to make deploying a good mail server easy, promote decentralization, innovation, and privacy on the web, have automated, auditable, and idempotent configuration, not make a totally unhackable, NSA-proof server, and not make something customizable by power users. Mail-in-a-Box turns a fresh Ubuntu 18.04 LTS 64-bit machine into a working mail server by installing and configuring various components. It is a one-click email appliance. There are no user-configurable setup options. It "just works."
    Downloads: 6 This Week
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  • 7
    base64 RFC1113 Vanilla ANSI-C Code for a portable stand-alone file encode/decode utility. In 2001, I asked people to 'Help me break it!' Since then, 10+years later, the code remains unbroken and is in wide production use world-wide. It has been ported to all major architectures and been used as a template for ports to different computer and human languages. This is very mature and stable code. Although this comes from a project that was constrained by export controls and is used in secure systems, it is not security code per-se. I have therefore altered the 'Export Controls' category.
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    Downloads: 31 This Week
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  • 8
    Fetchmail - the mail-retrieval daemon

    Fetchmail - the mail-retrieval daemon

    Client daemon to move mail from POP and IMAP to your local computer

    Fetchmail is a mail retrieval daemon that can download messages from POP3, IMAP, ODMR and ETRN-based stores, with SSL/TLS security including certificate verification, and pass downloaded mail to a local SMTP or LMTP server, or a message delivery agent such as maildrop.
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    Downloads: 136 This Week
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  • 9
    Zentyal, Linux Small Business Server

    Zentyal, Linux Small Business Server

    Zentyal is a Linux Small Business Server

    Zentyal Server is an easy to use and affordable Linux server, specially designed to meet the needs of small and medium businesses Thanks to Zentyal's Samba integration, Zentyal provides native compatibility with Microsoft Active Directory, allowing you to join Microsoft clients to a domain and manage them easily. Zentyal Server incorporates all the network services required in a small and medium business environment: * Directory & Domain Server with native compatibility with Microsoft Active Directory * Mail Server with ActiveSync and webmail * Gateway with firewall and proxy * Infrastructure Server with DNS/DHCP server, Certification Authority and Virtual Private Networks For more information and download, please access the project's home page.
    Downloads: 26 This Week
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  • 10
    Untangle
    Untangle is a Linux-based network gateway with pluggable modules for network applications like spam blocking, web filtering, anti-virus, anti-spyware, intrusion prevention, bandwidth control, captive portal, VPN, firewall, and more. Visit http://untangle.com
    Downloads: 24 This Week
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  • 11
    IGSuite - Integrated Groupware Suite

    IGSuite - Integrated Groupware Suite

    IGSuite is a web-ajax-based Integrated Groupware Suite

    IGSuite is a web-based Integrated Groupware Suite oriented to be a CRM solution. In the Suite you can find: IGWebMail, IGCalendar, IGContacts, IGArchive, IGWiki, IGTodo, IGChat, Projects, IGFax an HylaFax client, IGFileManager, IGMsg and many other.
    Downloads: 42 This Week
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  • 12
    Postfix greylisting policy service with auto-white-listing written in Perl with SQL database as storage backend. Greylisting stops 50 to 90 % junk mails (spam and virus) before they reach your Postfix server (saves BW, user time and CPU time).
    Downloads: 23 This Week
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  • 13
    vtenext - Holistic CRM (CRM + BPM + AI)
    vtenext, holistic CRM is not for you if you are looking for: - a classic CRM separated by departments, a copy of the closed source CRM but open source - a solution that permit to you to avoid to pay any kind of support for the CRM of your company - a second choice CRM, cause you have not enough budget for the closed source. So please, save time and save energy. Don’t DOWLOAD VTE If you are looking for: - a new age of CRM applications - a solution that has the right balance between performance and user licenses - an holistic application that manage all the customer processes, including the internal customers Please go on and have fun. For any support feel free to contact us and to have more information regarding the installation procedure visit: http://usermanual.vtenext.com/books/installation-requirements/page/installation-requirements-vtenext-1812
    Downloads: 17 This Week
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  • 14
    Cypht

    Cypht

    Lightweight Open Source webmail written in PHP and JavaScript

    All your E-mail, from all your accounts, in one place. Cypht is not your father's webmail. Unless you are one of my daughters, in which case it is your father's webmail. Cypht is like a news reader, but for E-mail. Cypht does not replace your existing accounts - it combines them into one. And it's also a news reader. The driving force behind Cypht development is to provide combined views for multiple accounts, but it's also a standard E-mail client that lets you browse and manage IMAP folders and send outbound messages with SMTP. Cypht is an application built entirely of plugins, or as we call them, module sets (which is obviously way cooler sounding than plugins), that are executed by the framework. Modules provide a flexible way to add new features or customize the program without hacking the code. Cypht is Open Source (LGPL V2), and written in PHP and JavaScript.
    Downloads: 3 This Week
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  • 15
    Laravel Mailbox

    Laravel Mailbox

    Catch incoming emails in your Laravel application

    Catch incoming emails in your Laravel application. Laravel Mailbox is a package for Laravel 5.7 and up that will allow your application to catch and react to incoming emails from different services like Mailgun, SendGrid, or the local log driver for debugging purposes. Listen to incoming email messages in a Laravel-Route-like fashion and react to them.
    Downloads: 3 This Week
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  • 16
    Rspamd

    Rspamd

    Rapid spam filtering system

    Rspamd is an advanced spam filtering system and email processing framework that allows evaluation of messages by a number of rules including regular expressions, statistical analysis and custom services such as URL black lists. Each message is analysed by Rspamd and given a verdict that might be used by MTA for further processing (e.g. to reject a message, or add a special header indicating spam) along with other information, such as possible DKIM signature or modifications suggested for a message. Rspamd can act as a Milter allowing direct interaction with popular MTA systems, such as Postfix or Sendmail. Rspamd is designed to process hundreds of messages per second simultaneously, and provides a number of useful features including a comprehensive Lua API that allows access to messages processing in various aspects as well as asynchronous network API to access external resources, such as DNS, HTTP or even generic TCP/UDP services.
    Downloads: 3 This Week
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  • 17
    listmonk

    listmonk

    High performance, self-hosted, newsletter and mailing list manager

    Performance and features packed into a single binary. Manage millions of subscribers across many single and double opt-in lists with custom JSON attributes for each subscriber. Query and segment subscribers with SQL expressions. Use the super fast bulk importer (10k records per second) or use HTTP/JSON APIs or interact with the simple table schema to integrate external CRMs and subscriber databases. Visualize and compare campaign performance. Connect external visualization programs to the database easily with the simple table structure. Create powerful, dynamic e-mail templates with the Go templating language. Use template expressions, logic, and 100+ functions in subject lines and content. Write HTML e-mails in a WYSIWYG editor, Markdown, raw syntax-highlighted HTML, or just plain text. Highly configurable, multi-threaded, high-throughput multi-SMTP e-mail queues for super fast campaign delivery.
    Downloads: 3 This Week
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  • 18
    (This site is DEPRECATED. Please visit https://github.com/verdammelt/tnef) TNEF provides a way to unpack those pesky Microsoft MS-TNEF MIME attachments. It operates like tar in order to upack any files which may have been put into the MS-TNEF attachment instead of being attached seperately.
    Downloads: 20 This Week
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  • 19
    mht to htm

    mht to htm

    Conversion from *.mht files to *.htm files.

    Conversion from *.mht files to *.htm files. mht2htm extracts all files from mht in single dir so you can open it on any OS. Also works with .eml, .msg, .nws... files
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    Downloads: 23 This Week
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  • 20

    Isync

    mailbox synchronizer

    A command line utility for synchronizing remote IMAP mailboxes and local maildir-style mailboxes. This is useful for working in disconnected (off-line) mode, such as on a laptop, but also for mirroring mailboxes between servers.
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    Downloads: 62 This Week
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  • 21
    NOCC
    NOCC is a simple and fast Webmail client which can handle POP3 and IMAP mailboxes and sends email via SMTP. It is written with PHP, has low requirements (no database, frames). Features multi-language support, MIME attachments, displays HTML messages. The installation guide comes with the source code: https://sourceforge.net/p/nocc/code/HEAD/tree/trunk/webmail/docs/INSTALL If you encounter problems or bugs you can always try the current HEAD version: https://sourceforge.net/p/nocc/code/HEAD/tarball?path= Questions, bug reports or support requests are very welcome: https://sourceforge.net/p/nocc/_list/tickets Alternative source code repository: https://github.com/oheil/NOCC
    Downloads: 14 This Week
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  • 22
    Fast, intelligent, automatic spam detector using Paul Graham style Bayesian analysis of word counts in spam and non-spam emails. Filtering adapts to personal tastes automatically. No manual rule creation required. Intended for use with procmail, maild
    Downloads: 16 This Week
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  • 23
    Vipul's Razor is a distributed, collaborative, spam detection and filtering network. The primary focus of the system is to identify and disable an email spam before its injection and processing is complete.
    Downloads: 69 This Week
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  • 24
    Bayesian anti-spam classifier written in Python.
    Downloads: 13 This Week
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  • 25
    SwiftMailer

    SwiftMailer

    Comprehensive mailing tools for PHP

    SwiftMailer is a flexible, object-oriented PHP library for sending emails via SMTP, Sendmail, or other transports (including third-party APIs). It supports features essential to robust email sending: attachments, HTML vs. plain text bodies, inline images, MIME types, message queues, and signed messages via DKIM. The API lets developers build richly composed messages with multiple parts, headers, and encodings without dealing with raw mail formatting. With built-in retry logic, logging, and error handling, it handles network failures gracefully, integrating into applications or frameworks for background dispatch. Though newer libraries such as Symfony Mailer have emerged, SwiftMailer remains influential in legacy codebases and continues to serve as a reference for well-structured email composition in PHP.
    Downloads: 2 This Week
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