1614 Like Thunderbird Good alternative? YES NO Thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is modeled after Mozilla Firefox. It supports POP... Open Source Mac Windows Linux BSD PortableApps.com ... Haiku Built-in RSS reader Calendar integration Customizable Extensible by Plugins/Extensions Free API Import from Google Reader ... Integrated Chat Integrated Web Browser Multiple Account support Support for OPML import of feeds POP3 Support Tabbed interface Add a feature Despite its age, Thunderbird remains the most fully featured email client out there. Various add-ons can extend its functionality, it (now) has a built in calendar and, unlike Outlook, it's free, open source and respects your privacy. JohnFastman • Jan 2017 Disagree Agree Seems to be more secure than Microsoft alternatives and more easily updatable. Guest • Apr 2017 Disagree Agree It is a really poor software, no featureas, it's complicated. Try to configure a signature with a logo and you will see.... Terrible!! Guest • 12 days ago Disagree Agree
156 Like eM Client Good alternative? YES NO eM Client is a full featured e-mail client with a modern and easy to use interface. eM Client also offers calendar, tasks, contacts and chat. Freemium Windows Built-in translation Email preview Encrypted email Support for IMAP POP3 Support Add a feature
255 Like Mailbird Good alternative? YES NO Mailbird is more than just another email client - It's an all-in-one communication platform for email, contacts, calendar, apps, task management, video meetings and... Freemium Windows Conversation view Multiple Account support Add a feature It is only for Mail and can not use Exchange Accounts Guest • Dec 2016 Disagree Agree
124 Like Postbox Good alternative? YES NO Postbox is an email application that helps you organize your work life and get stuff done. It has all the elegance and simplicity of Apple Mail, but with more power... Commercial Mac Windows Support for IMAP Multiple languages POP3 Support Add a feature
92 Like Opera Mail Good alternative? YES NO Opera Mail powerfully organizes, indexes, and sorts your messages. It has spam filtering (both automated and Bayesian), supports POP3 and IMAP, newsgroups as well as... Free Mac Windows PortableApps.com Built-in RSS reader Integrated Spam Protection Add a feature
64 Like Claws Mail Good alternative? YES NO Claws Mail is an email client (and news reader), based on GTK+, featuring Quick response Graceful, and sophisticated interface Easy configuration... Open Source Windows Linux BSD Xfce Built-in RSS reader Content Filtering Extensible by Plugins/Extensions Support for IMAP Multiple languages Multiple Account support Add a feature
47 Like Sylpheed Good alternative? YES NO Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client (mailer, MUA). Sylpheed runs on many systems such as Windows, Linux, BSD, Mac OS X and... Open Source Mac Windows Linux BSD PortableApps.com Lightweight Add a feature
45 Like Mutt Good alternative? YES NO 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... Open Source Mac Windows Linux Xfce Command line interface Support for IMAP POP3 Support S/MIME support Add a feature
24 Like Open365 Good alternative? YES NO The open source cloud with LibreOffice online - LibreOffice online + Seafile + KDE. Improve your productivity and communicate better with your team members. The world is... Open Source Mac Windows Linux Android iPhone ... Self-Hosted Cloud sync Add a feature
53 Like EssentialPIM Good alternative? YES NO EssentialPIM lets you manage appointments, tasks, notes, contacts, password entries and email messages across multiple devices and cloud applications. PIM stands for... Freemium Windows Android iPhone No features added Add a feature Tricky to configure. Does not speak MAPI, but many Cloudservices. I was not successful to synchronize OwnCloud Guest • Dec 2016 Disagree Agree
51 Like Inky Good alternative? YES NO Inky is a secure email platform that makes end-to-end encrypted email simple and painless. Commercial Mac Windows Android iPhone Android Tablet ... iPad No features added Add a feature
45 Like The Bat Good alternative? YES NO The Bat! is a secure email client software, built to protect your correspondence against third-parties. . Commercial Windows Built-in RSS reader Support for IMAP POP3 Support Add a feature
30 Like Zimbra Desktop Good alternative? YES NO 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
14 Like Microsoft Mail and Calendar Alternative? YES NO Windows 10 has Mail and Calendar apps already built in. With the Mail application you can now easily see all message from your... Free Windows Windows RT Bundled with Windows Add a feature
24 Like Kontact - KMail Good alternative? YES NO 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... Open Source Mac Windows Linux BSD No features added Add a feature
