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
Microsoft Office Outlook Part of the Microsoft Office Suite, Outlook is a personal information manager that lets you manage your e-mail, calendar, contacts, and tasks. Commercial Mac OS X Windows Web Android iPhone ... Android Tablet Windows Phone iPad Apple Watch Android Wear Built-in Calendar Dark theme Signature with image Add a feature 308 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
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
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
EssentialPIM 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 Portable Add a feature 58 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
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
The Bat The Bat! is a secure email client software, built to protect your correspondence against third-parties. . Commercial Windows S/MIME OpenPGP Built-in RSS reader Support for IMAP POP3 Support Portable Add a feature 46 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 OS X Windows Linux BSD No features added Add a feature 30 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 Add a feature 12 Like
Microsoft Mail and Calendar 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 17 Like
ZeroMail ZeroMail , End-to-end encrypted, peer-to-peer not-instant messaging site. Free Open Source Mac Windows Linux Web Self-Hosted ... Python JavaScript ZeroNet Decentralized Distributed Add a feature 10 Like
