Alternatives to Microsoft Office Outlook for all platforms with any license

  • Thunderbird icon

    Thunderbird

    Thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is modeled after...

    Open Source Mac Windows Linux BSD Haiku

  • Inbox by Gmail icon

    Inbox by Gmail

    Built on everything that we've learned from Gmail, Inbox is a fresh start that goes beyond email to help you get back to what...

    Free Web / Cloud Android iPhone Chrome OS iPad Chrome

  • K-9 Mail icon

    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...

    Open Source Android Android Tablet

  • Sunrise Calendar icon

    Sunrise Calendar Discontinued

    Sunrise is a free calendar made for Google Calendar, iCloud and Exchange. Sunrise also connects with all your favorite apps like...

    Free Mac Web / Cloud Android iPhone Chrome OS Android Tablet ... iPad Apple Watch

  • Apple Mail icon

    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

  • Mailbird icon

    Mailbird

    The Best Email Client for Windows 7, 8 & 10 - Mailbird is more than just another email client. It's an all-in-one...

    Freemium Windows

  • Opera Mail icon

    Opera Mail

    Opera Mail powerfully organizes, indexes, and sorts your messages. It has spam filtering (both automated and Bayesian), supports...

    Free Mac Windows

  • eM client icon

    eM client

    Fully functional alternative to Microsoft Outlook, including native interoperability with Exchange servers.

    Free Personal Windows

  • Postbox icon

    Postbox

    Postbox is an email application that helps you organize your work life and get stuff done. It has all the elegance and simplicity...

    Commercial Mac Windows

  • Evolution icon

    Evolution

    Evolution is the official personal information manager and workgroup information management tool for GNOME. It combines e-mail...

    Open Source Linux BSD GNOME

  • Nylas N1 icon

    Nylas N1

    N1 is an email client designed to be friendly and easy to use but also powerful and highly extensible. It works "out of the...

    Freemium Mac Windows Linux Web / Cloud Self-Hosted

  • Geary icon

    Geary

    Geary is an email application built for GNOME 3. It allows you to read and send email with a simple, modern interface.

    Open Source Linux BSD GNOME

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  • Claws Mail icon

    Claws Mail

    Claws Mail is an email client (and news reader), based on GTK+, featuring Quick response Graceful, and sophisticated...

    Open Source Windows Linux BSD Xfce

  • Airmail icon

    Airmail

    Airmail is a lightweight and lightning fast mail client for Mac. Feature list: Accounts: - Unified Inbox and folders - Multi...

    Commercial Mac iPhone iPad Apple Watch

  • Sylpheed icon

    Sylpheed

    Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client (mailer, MUA). Sylpheed runs on many systems such...

    Open Source Mac Windows Linux BSD

  • Apple Calendar icon

    Apple Calendar

    Keep track of your busy schedule and share it with others using Calendar. Create separate calendars — one for home, another for...

    Free Mac iPhone iPad iCloud

  • EssentialPIM icon

    EssentialPIM

    EssentialPIM lets you manage appointments, tasks, notes, contacts, password entries and email messages across multiple devices and...

    Freemium Windows Android iPhone

  • Sparrow icon

    Sparrow Discontinued

    Sparrow is a minimalist mail application for Mac. It was designed to keep things simple and efficient. No fancy stuff here... just...

    Commercial Mac iPhone

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  • Inky icon

    Inky

    End-to-End Encrypted Email that is a Delight to Use, on all devices, with all email accounts.

    Commercial Mac Windows Android iPhone Android Tablet iPad

  • Windows Live Mail icon

    Windows Live Mail Discontinued

    Windows Live Mail (formerly named Windows Live Mail Desktop) is a freeware email client from Microsoft. It is the successor to Outlook...

    Free Windows

  • Mutt icon

    Mutt

    Mutt is a small but very powerful text-based mail client for Unix operating systems. Some of its features are: color support, message...

    Open Source Mac Windows Linux Xfce

  • Open365 icon

    Open365

    The open source cloud with LibreOffice online - LibreOffice online + Seafile + KDE. Improve your productivity and communicate better...

    Open Source Mac Windows Linux Android iPhone Self-Hosted

  • The Bat icon

    The Bat

    The Bat! is a secure email client software, built to protect your correspondence against third-parties. The Bat! protects your...

    Commercial Windows

  • Zimbra Desktop icon

    Zimbra Desktop

    The free Zimbra Desktop client allows you to meld the online and offline worlds – storing and synching your email, calendar, contacts...

    Free Personal Mac Windows Linux

  • CloudMagic icon

    CloudMagic

    The email app that gets work done. Works with Gmail, Exchange, Yahoo, Outlook, iCloud, Google Apps, Office 365 and any IMAP account. ...

    Freemium Mac Android iPhone Android Tablet iPad Apple Watch ... Android Wear

  • Polymail icon

    Polymail

    The most powerful platform for email productivity in a beautiful native app — on desktop and mobile.

    Free Mac iPhone iPad

  • Foxmail icon

    Foxmail

    Foxmail is a free POP3 and IMAP4 e-mail client in English and Chinese for Windows systems.

    Free Windows

  • aCalendar icon

    aCalendar

    Android calendar-app showing the weeks of the year (week numbers), 21 languages, syncable with Google Calendar: FEATURES *...

    Free Android

  • Trojitá icon

    Trojitá

    Trojitá, is a fast Qt IMAP e-mail client that respects open standards and facilitates modern technologies. Trojitá values...

    Open Source Windows Linux

  • VueMinder Calendar icon

    VueMinder Calendar

    Take control of your schedule and get reminded wherever and however you want. Instantly access your appointments, tasks, and notes...

    Freemium Windows

  • ALTO Mail icon

    ALTO Mail

    Alto Mail makes managing your email easy again. Add all your mail accounts to our app (including Gmail, Outlook, Yahoo!, AOL Mail...

    Free Web / Cloud Android iPhone Android Tablet iPad

  • Mail Wise icon

    Mail Wise

    Mail Wise – Read Just What You Need. The best conversation threads ever. A free email client that transforms messy emails into clean...

    Freemium Android

  • Mail icon

    Mail

    Windows 10 has Mail and Calendar apps already built in. With the Mail application you can now...

    Free Windows

  • Spark icon

    Spark

    E-mail app with all the great features: swipes (long/short), snooze, add (multiple) attachments from the cloud, support for various...

    Free iPhone iPad Apple Watch