Browse free open source Email Clients and projects for Mac and Linux below. Use the toggles on the left to filter open source Email Clients by OS, license, language, programming language, and project status.

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  • 1
    CellMate Bot currently allows google queries and aim functions through OSCAR. Made to be used form your cellphone's AIM client, CellMate Bot will be updated to include email, news and map directions in the future. For now, you can use Google SMS.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 2
    zClipse is a project for building Eclipse (http://www.eclipse.org) plugins. Plugins currently being developed include: TabNavigator - editor enhancements; JScheme - Scheme integration; Insectivore - shared TeamTasks, integrated with Tasks view.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 3
    Web-based email client written in PHP 4. Planned features for this client include 1) multiple Inboxs, 2) LDAP-based Adress Book, 3) multiple mime-types viewable online, 4) support thumbnail views of image attachments.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 4
    the project has moved to <a href=http://aptg2.schattenzauberer.de>http://aptg2.schattenzauberer.de</a> visit the project there
    Downloads: 1 This Week
    Last Update:
    See Project
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  • 5
    This application is an email ( POP3/SMTP ) application built with eclipse 3.1.1. It shows the power of eclipse to build RCP apps. It is using the embedded version of Derby as the DBMS
    Downloads: 0 This Week
    Last Update:
    See Project
  • 6
    CollabOffice is a web based Personal Information Manager (PIM) which allows teams to share and work together. It provides email, documents, calendar, contacts, instant messaging, news (nntp), and online web based administration.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 7
    CPO is a tool written in Java that manages newsletters. It's focused on corporate needs (privacy, scalability, bounce count, opt-in & out, newsletter statistics).
    Downloads: 0 This Week
    Last Update:
    See Project
  • 8
    Diom Webmail is a webmail client written in PHP to interact with an IMAP server. Diom Webmail is easily configurable, with common features like sending and recieving messages and attachements, as well as an address book, and spell check.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 9
    A multiplatform (Unix/Linux, Windows and Mac OS X) mail client with native versions for each platform and features such as appointments and NNTP newsgroups.
    Downloads: 0 This Week
    Last Update:
    See Project
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  • 10
    Framemail is a program that lets you check simeotaneously your Yahoo Mail, Gmail, Netscape Mail, Fastmail.FM, and Lycos Mail using frames. More are coming!!!
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    Gmail Attachment Forward Tool Let user forward many attachment mail which already in your mailbox at same time. Very easy to move many file to other mail box.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 12
    Hail is a Hotmail client written in PHP. This client will give users some advanced abilities over their hotmail account.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    Helper is an integrated PIM and social networking (blog, RSS, foaf, etc) client. Allows to store, annotate and navigate information uniformly by means of folders, tags and categories. Based on OWL, Eclipse RCP and open standards (Dublin Core, foaf, etc).
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    JFoxMail is a opensource J2EE webmail application. Access to read from IMAP account, Compose using SMTP, and Address Book management using LDAP is supported.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15
    A fetchmail clone written in Java for fetching mails from Exchange servers (via Outlook Web Access)
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16
    Jack Mail Client: jackmailclient: Mail Client in Java This is a simple mail client uses any mail server with a minimal configuration you will have a robost email client. Purely written in java.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    Jwapmail is opensource wap (wml) based email client (wapmail) written in PHP using IMAP protocols to communicate with the mailbox server. Jwapmail is compliance to RFC2060 and RFC822. Jwapmail doesn't use php-imap library.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18
    Single web mail client interface to access Gmail, Hotmail/Msn, and IMAP accounts all at the same time. Tabbed interface for reading and composing email. 3 panel perspective: folder list, email list and email preview.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    The MFlow project aims to create a modular messaging client in Java. Its architecture should make it as easy as possible to add support for new protocols, as well as maximizing configurability.
    Downloads: 0 This Week
    Last Update:
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  • 20
    MaiJ - Mail.app in Java: MaiJ is a Java project to implement a nice featured and portable mail client. The main goal is high configurability, security, usability, performance and the look and feel of Mail.app / Apple Mail.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 21
    Handles GetURL apple events, like a mail client would handle a mailto link, by delegating them to the mutt mail client, using AppleScript and Terminal.app. Both the developers are viewing this mostly as a learning experience, so you are welcome to join.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 22
    Downloads: 0 This Week
    Last Update:
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  • 23
    Some CGI scripts (perl) to read email using a wap device
    Downloads: 0 This Week
    Last Update:
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  • 24
    Roles and Permissions
    This plugin adds to RoundCube the ability to easily give different permissions to users by creating a roles table and assigning users to it. This and other plugins may use its public function to register permissions and admin them with this plugin.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    Samparka is a PHP class that combines features of PHPMailer and Akismet. It can be used to check if submitted messages contain spam and then send the same using Gmail or any other SMTP host you have an account with.
    Downloads: 0 This Week
    Last Update:
    See Project
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