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 1725 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 306 Like
K-9 Mail K-9 is an open source email client for Android with multi-folder sync, email signatures, Bcc-to-self, return-address configuration, keyboard shortcuts, Exchange Support... Free Open Source Android Android Tablet Ad-free Configurability Multiple Account support PGP Encryption ... Privacy focused Add a feature 173 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
Nylas Mail Nylas Mail is an email client designed to be friendly and easy to use but also powerful and highly extensible. It works "out of the box" with all the major... Free Open Source Mac OS X Linux Web Self-Hosted Cloud sync Extensible by Plugins/Extensions Sync with Google Calendar Office 365 integration Add a feature 59 Like Discontinued On September 6, 2017 the company announced that customer support for Nylas Mail was no longer provided. The project was fully open-sourced and the repository can be found on GitHub. Last version of the program, 2.0.31, released in April 2017, can be still downloaded from the official website. https://www.nylas.com/blog/sunsetting-nylas-mail-development
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
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 BSD GNOME No features added Add a feature 68 Like
Spark E-mail app with all the great features: swipes (long/short), snooze, add (multiple) attachments from the cloud, support for various e-mail services and more. Free Mac iPhone iPad Apple Watch Calendar integration Cloud sync Export to PDF Add a feature 54 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 21 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
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
