Thunderbird Thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is modeled after Mozilla Firefox. Free Open Source Mac Windows Linux BSD PortableApps.com ... Haiku Extensible by Plugins/Extensions Built-in RSS reader Calendar integration Customizable ... Extensible by Plugins/Extensions Extensible by Plugins/Extensions Free API Import from Google Reader Integrated Chat Integrated Web Browser Multiple Account support Export to OPML Import feeds from OPML POP3 Support Portable Tabbed interface Add a feature 1742 Like Thunderbird is buggy, frequently locks up, slow and takes long to update from server. Spark is fast, easy and beautiful Guest • Mar 2017 • 11 agrees and 1 disagrees Disagree Agree There is NO Spark Version for Windows. That's why Thunderbird is the Best Alternative IMO. Guest • Apr 2018 Disagree Agree
Claws Mail Claws Mail is an email client (and news reader), based on GTK+, featuring Quick response Graceful, and sophisticated interface Easy configuration... Free Open Source Windows Linux BSD Lightweight Built-in RSS reader Content Filtering Customizable ... Extensible by Plugins/Extensions Support for IMAP Multiple languages Multiple Account support Add a feature 76 Like
Mailspring Boost your productivity and send better email with Mailspring, a beautiful, fast email client for Mac, Windows, and Linux. Mailspring is free to use and an optional pro... Freemium $ $ $ Open Source Mac OS X Windows Linux Arch Linux Fedora ... Ubuntu Dark theme Email tracking Multiple Account support Sync Contacts ... Conversation view Customizable Drag n drop Email Analytics Email tracking & analytics Extensible by Plugins/Extensions Support for IMAP Support for Themes Unified inbox Add a feature 22 Like It's the most similar, with the features most inline. It even looks the same in appearance, and all the menus and shortcut keys match. Guest • Mar 2018 • 0 agrees and 1 disagrees Disagree Agree
Icedove Icedove is the Thunderbird email client rebranded by Debian . Free Open Source Linux Xfce Built-in RSS reader Extensible by Plugins/Extensions Integrated Chat Export to OPML ... Import feeds from OPML Tabbed interface Add a feature 21 Like
Nylas Mail Lives Nylas Mail Lives is a fork of Nylas Mail that fixes many longstanding issues, improves the client experience, and is committed to... Free Open Source Mac OS X Windows Linux Self-Hosted Extensible by Plugins/Extensions Multiple Account support Add a feature 3 Like
Hiri Fast, good looking email client. Lighter than MS Outlook with some unique and clever features. Works ONLY with Outlook / Exchange. Commercial $ $ $ Mac OS X Windows Linux Calendar integration Convert Email to Task Add a feature 12 Like
Kube Kube is a modern communication and collaboration client built with QtQuick on top of a high performance, low resource usage core. It provides online and offline access... Free Open Source Linux No features added Add a feature 2 Like
Columba Columba is an email client written in Java, featuring a user-friendly graphical interface with wizards and internalionalization support. Its a powerful mail management... Free Open Source Mac OS X Windows Linux BSD No features added Add a feature 3 Like Discontinued The project is no longer developed. Last version, 1.4, released in March 2007, can be still downloaded from SourceForge.
