Thunderbird Thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is modeled after Mozilla Firefox. The closest thing to Incredimail on a Mac that I know of. At least you can change the "theme" of the interface to keep the app from being boring. Good, reliable program. Guest • Nov 2015 Disagree Agree Free Open Source Mac Windows Linux BSD PortableApps.com ... Haiku Extensible by Plugins/Extensions Built-in RSS reader Built-in Calendar Calendar integration ... Categories Customizable Extensible by Plugins/Extensions Free API Gmail integration Google Calendar integration Import from Google Reader Support for IMAP Integrated Chat Integrated Password Manager Integrated Web Browser IOS support Legacy addons support Multiple Account support Export to OPML Import feeds from OPML POP3 Support Portable Secure File Sharing SMTP integration Tabbed interface Support for Themes Add a feature 1780 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. Freemium $ $ $ Mac Windows Web Android iPhone ... Android Tablet Windows Phone iPad Apple Watch Android Wear Box.com integration Built-in Calendar Calendar integration Dark theme ... Dropbox integration Email scheduling Exchange Integration Flight Status Gmail integration ICloud Integration Integrated Search Multiple Account support Office 365 integration Onedrive integration Organize mails Shared calendars Signature with image Unified inbox Yahoo Integration Add a feature 315 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 iPhone iPad CalDAV CardDAV Bundled with macOS Add a feature 210 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 Configurable Configurable request timeout ... Multiple Account support Export to PDF Sync across Devices Add a feature 63 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 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 Visual Programming Add a feature 131 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 51 Like
Polymail The most powerful platform for email productivity in a beautiful native app — on desktop and mobile. Commercial $ $ $ Mac iPhone iPad Sync Contacts Email scheduling Email tracking Multiple Account support Add a feature 20 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 32 Like
Astro Modern email and calendar apps for Mac, iOS, Android, Slack and Alexa, powered by Artificial Intelligence. Astro keeps you focused on what's most important. Free Mac Android iPhone iPad Slack ... Amazon Echo (Alexa Voice Service) Calendar integration Email tracking Google Calendar integration Multiple Account support ... Snooze reliability Add a feature 20 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 29 Like
MailMate MailMate is an IMAP email client for Mac featuring extensive keyboard control, Markdown supported email composition. Commercial $ $ $ Mac S/MIME OpenPGP No features added Add a feature 17 Like
Simple Mail Simple Mail is a mail client for Firefox. It allows you to get notified, read and write messages for multiple email accounts inside Firefox. Usage: Configure one or... Free Mac Windows Linux Firefox No features added Add a feature 5 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 Convert Email to Task Office 365 integration Add a feature 22 Like
GyazMail GyazMail is a email client software for Mac OS X, based on Cocoa framework, simple, easy-to-use with many features. Commercial Mac POP3 Support Add a feature 3 Like
Columba Columba is an email client written in Java, featuring a user-friendly graphical interface with wizards and internalionalization support. Its a powerful mail management... Free Open Source Mac Windows Linux BSD No features added Add a feature 3 Like Discontinued The project is no longer developed. Last version, 1.4, released in March 2007, can be still downloaded from SourceForge.
