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 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 1726 Like
eM Client 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 Automatic Backup Built-in themes Built-in translation Calendar integration ... Combined Inbox Conversation view Dark theme Email preview Encrypted email Support for IMAP Imports email from Live mail POP3 Support Tasks managment Add a feature 179 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 Built-in RSS reader CalDAV Calendar integration CardDAV ... Encrypted email Integrated Spam Protection Multiple languages POP3 Support Add a feature 148 Like
Apple Mail There’s big news attached. The best way to manage email on a Mac gets even better with OS X Yosemite. Free Mac OS X iPhone iPad Bundled with macOS Add a feature 205 Like
Mailbird 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 Undo send Asana integration Sync Contacts Conversation view ... Dropbox integration Facebook integration GSuite Integration Multiple Account support Slack integration Trello integration Twitter integration Unified inbox Add a feature 269 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 Xfce 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
Postbox 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 OS X Windows Multiple Account support Box.com integration Built-in RSS reader Dropbox integration ... Extensible by Plugins/Extensions Support for IMAP Multiple languages Onedrive integration POP3 Support Tabbed interface Add a feature 128 Like
Opera Mail 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 OS X Windows PortableApps.com Built-in RSS reader Integrated Spam Protection Message Filtering Portable Add a feature 95 Like Discontinued Opera Mail seems to be no longer updated, but you can still download it from: http://www.opera.com/computer/mail
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 OS X Windows Linux Xfce Command line interface Support for IMAP POP3 Support S/MIME support Add a feature 51 Like
Sylpheed 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... Free Open Source Mac OS X Windows Linux BSD PortableApps.com Lightweight Add a feature 51 Like
Newton Mail Newton is a fully featured mail client available for Android, iOS, macOS and Windows. Works for watch too. It's based on cloud so you can connect it to any account... Commercial Mac OS X Windows Android iPhone Windows RT ... Android Tablet iPad Apple Watch Android Wear Sync between devices Combined email cloud syncing Conversation view Focused Inbox ... Multiple languages Real-time pushing Salesforce integration Add a feature 38 Like
Polymail The most powerful platform for email productivity in a beautiful native app — on desktop and mobile. Freemium Mac OS X iPhone iPad Sync Contacts Email scheduling Email tracking Multiple Account support Add a feature 20 Like
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
Foxmail Foxmail is a free POP3 and IMAP4 e-mail client in English and Chinese for Windows systems. Free Windows Mouse gestures POP3 Support Portable Add a feature 14 Like
MailMate MailMate is an IMAP email client for Mac featuring extensive keyboard control, Markdown supported email composition. Commercial $ $ $ Mac OS X S/MIME OpenPGP No features added Add a feature 17 Like
