Thunderbird Thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is modeled after Mozilla Firefox. Cannot handle google calendar by default (needs plugins). Same for contacts etc. Guest • Jan 2018 • 3 agrees and 3 disagrees Disagree Agree Free Open Source Mac Windows Linux BSD PortableApps.com ... Haiku Extensible by Plugins/Extensions Built-in RSS reader Support for IMAP Multiple Account support ... SMTP integration Built-in Calendar Calendar integration Categories Customizable Delivery reports Extensible by Plugins/Extensions Extensible by Plugins/Extensions Free API Gmail integration Google Calendar integration Import from Google Reader HTML Compose Integrated Chat Integrated Password Manager Integrated Web Browser Legacy addons support Export to OPML Import feeds from OPML POP3 Support Portable Secure File Sharing Tabbed interface Support for Themes Add a feature 1857 Like
Evolution Evolution is the official personal information manager and workgroup information management tool for GNOME. It combines e-mail, calendar, address book, and task list... Free Open Source Linux BSD S/MIME GNOME OpenPGP CalDAV Calendar integration Built-in RSS reader CardDAV ... Encrypted email Integrated Spam Protection Multiple languages POP3 Support Add a feature 163 Like
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 Integrated Email Client Multiple languages Multiple Account support Add a feature 83 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... Mailspring has almost the same feature set as eM Client, making it a great alternative for folks used to eM Client. bengotow • Nov 2017 Disagree Agree Freemium $ $ $ Mac Windows Linux Arch Linux Fedora ... Ubuntu Multiple Account support Night mode/Dark Theme Unified inbox Customizable ... Email tracking Drag n drop Email Analytics Extensible by Plugins/Extensions Support for IMAP Support for Themes Threaded Conversations Add a feature 47 Like
Geary Geary is an email application built for GNOME 3. It allows you to read and send email with a simple, modern interface. Free Open Source Linux Chrome OS BSD GNOME Multiple Account support Add a feature 73 Like
Mutt Mutt is a small but very powerful text-based mail client for Unix operating systems. Some of its features are: color support, message threading, MIME support (including... Free Open Source Mac Windows Linux Xfce Command line interface Support for IMAP POP3 Support S/MIME support Add a feature 54 Like
Kontact - KMail KMail is the email component of Kontact, the integrated personal information manager of KDE. Kontact is a personal information manager and groupware software suite for... Free Open Source Mac Windows Linux BSD No features added Add a feature 34 Like
Trojitá Trojitá, is a fast Qt IMAP e-mail client that respects open standards and facilitates modern technologies. Trojitá values vendor-neutrality that IMAP provides... Free Open Source Windows Linux IMAP debugging Support for IMAP QT Based Add a feature 12 Like
Kontact Kontact is the integrated Personal Information Manager of KDE. Kontact suite unites mature and proven KDE PIM applications under one roof. Thanks to the powerful... Free Open Source Windows Linux Convert Email to Task Add a feature 26 Like
Hiri Fast, good looking email client. Lighter than MS Outlook with some unique and clever features. Works ONLY with Outlook / Exchange. Commercial $ $ $ Mac Windows Linux Calendar integration Office 365 integration Convert Email to Task Add a feature 30 Like
Pantheon Mail Pantheon Mail is a free open source email client forked by the elementary OS community from Geary... Free Open Source Linux elementary OS Multiple Account support Add a feature 8 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... Discontinued On its github page it states it is archived and is no longer maintained. Free Open Source Mac Windows Linux Self-Hosted Extensible by Plugins/Extensions Multiple Account support Add a feature 4 Like
Zimbra Desktop The free Zimbra Desktop client allows you to meld the online and offline worlds – storing and synching your email, calendar, contacts, files and documents in the cloud... Free Personal Mac Windows Linux No features added Add a feature 30 Like
sup Sup is a console-based email client for people with a lot of email. It supports tagging, very fast full-text search, automatic contact- list management, custom code... Free Open Source Linux Command line interface Console-based Multiple Account support Responsive design Add a feature 11 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 3 Like
