124 best Office Outlook Alternatives

Microsofts Office Outlook is one of the most used software in the world. It's of course most famous as a e-mail client but it can do much more. This list of alternatives is mainly focused on the e-mail part of things. Remember that you can filter to show only web alternative or even self-hosted alternatives by using a platform filter.

Maybe Calendar Integration or a built in RSS-feed support is important to you. Also remember that you can browse other apps as well if you for example looking for a dedicated todo-manager or a RSS reader.

The list of alternatives was last updated: 5/28/2018 7:57:00 PM

Alternatives to Microsoft Office Outlook for all platforms with any license

  • EssentialPIM

    EssentialPIM lets you manage appointments, tasks, notes, contacts, password entries and email messages across multiple devices and cloud applications. PIM stands for Personal Information Manager, and it allows you to keep all you information in electronic form. All your appointments, tasks, to do lists, notes and contacts are stored in a graphical and easily accessible form.

    Freemium $ $ $ Windows Android iPhone

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    • Tricky to configure. Does not speak MAPI, but many Cloudservices. I was not successful to synchronize OwnCloud Guest • Dec 2016 Disagree   Agree
  • 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 KDE. It supports calendars, contacts, notes, to-do lists, news, and email. It uses KParts to embed the various applications (KMail, KAddressBook, Akregator, etc.) into the container application.

    Free Open Source Mac OS X Windows Linux BSD

    No features added Add a feature

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  • Mailspring

    Mailspring is a desktop email client designed for macOS High Sierra, Windows 10 and Linux. With modern features like unified inbox, snoozing, templates, offline search, and support for Gmail labels, Mailspring will breathe life back into your tired inbox! Mailspring is free and supports all IMAP providers, including Gmail, Office 365 and iCloud. Mailspring does not support Exchange ActiveSync.

    Freemium $ $ $ Open Source Mac OS X Windows Linux Arch Linux Fedora ... Ubuntu

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  • The Bat

    The Bat! is a secure email client software, built to protect your correspondence against third-parties. The Bat! protects your information through multiple encryption streams with the options to encrypt your emails on disk and during communication through an SSL/TLS connection. Free of global email providers that keep your messages in the cloud, and free of Web clients, The Bat! ensures your data stays private.

    Commercial Windows S/MIME OpenPGP

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  • Kontact

    Kontact is the integrated Personal Information Manager of KDE. Kontact suite unites mature and proven KDE PIM applications under one roof. Thanks to the powerful KPart technology, existing applications are seamlessly integrated into one. The components of KDE Kontact are tailored to work well with each other. This results in features like intuitive drag-and-drop between appointment handling, task lists and contacts. KDE Kontact supports various groupware servers.

    Free Open Source Windows Linux

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  • Polymail

    Polymail is the modern email client, redesigned. Master your inbox with the most powerful email productivity tools — Email Tracking, Read Later, Send Later & more. All from a simple, unified interface. Say goodbye to cluttered browser add-ons and hello to beautiful email productivity. - Unlimited per-recipient email tracking - know exactly when and by whom your messages are read. - Snooze emails to be read later, when you need them.

    Freemium Mac OS X iPhone iPad

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  • Apple Calendar

    Keep track of your busy schedule and share it with others using Calendar. Create separate calendars — one for home, another for school, a third for work, and so on. See all your calendars in a single window or choose to see only the calendars you want. Calendar lets you create invitations using information from Contacts, update your guest list, keep track of responses, and receive the latest status information.

    Free Mac OS X iPhone iPad iCloud

    No features added Add a feature

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    • Outlook is an all-in-one solution including mail calendar etc. this soft does only one thing Guest • Oct 2015 • 2 agrees and 3 disagrees Disagree   Agree
  • 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 favorite people, more clearly organize social updates and newsletters, and use the popular “Sweep” feature to clean up your inbox.

    Free Windows Windows S

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    • Bundled in win 10 and very simple to use. Great if you just read mail. Guest • Jun 2017 Disagree   Agree
  • Canary Mail

    Canary is an exciting new email client for Mac that offers a full set of powerful features with one key difference - your emails are not stored on a 3rd party server. Every facet of Canary has been designed in accordance with our core philosophy of ensuring complete user privacy and offering reliable & snappy performance. Unlike other apps/services, using Canary is not contingent on providing access to your data.

    Commercial Mac OS X iPhone

    No features added Add a feature

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  • 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, yet having them locally accessible when on the road. Zimbra Desktop aggregates information across accounts (Zimbra, Yahoo! Mail, Gmail, Hotmail, etc.) and social networks (Facebook, Digg, Twitter, etc.) to help make communicating & sharing information easier than ever.

    Free Personal Mac OS X Windows Linux

    No features added Add a feature

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  • 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 and is committed to be as interoperable as possible.

    Free Open Source Windows Linux

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  • TypeApp

    TypeApp is an all-free, beautifully designed, universal email app, capable of managing unlimited number of mail accounts from various providers, allowing for smart push notifications while enabling personalization across multiple email accounts. TypeApp is the perfect replacement for your email app. With a powerful unified accounts experience packaged in an intuitive and easy to use design, TypeApp provides a top notch email service.

    Free Personal Android iPhone Android Tablet iPad Android Wear ... Kindle Fire

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  • Aqua Mail

    AquaMail is an email app for Internet and Exchange mail, for Android 4.0.3 and higher. Easy automatic setup for popular email services: Gmail, Yahoo, Hotmail, FastMail, Apple mail services (@me.com / @mac.com), GMX, AOL, and more. Recognizes mail accounts at domains hosted by Google Apps, Yahoo BizMail, Office 365, and others. Works with many other email services via standard Internet email protocols (IMAP, POP3, SMTP) as well as Microsoft’s EWS (Exchange Web Services) protocol.

    Freemium Android Android Tablet

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  • Hiri

    Fast, good looking email client. Lighter than MS Outlook with some unique and clever features. You can use Hiri to connect to Exchange, Office365, or a Microsoft email account (Outlook.com, Live, Hotmail). Other email providers, such as Gmail, Yahoo, etc are currently not supported. Basics: - Fully integrated calendar - Tasks - Contacts - Built for Exchange, Office 365 and Outlook.com - Uses Microsoft's own protocol - EWS.

    Commercial $ $ $ Mac OS X Windows Linux

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    • Most of the clients listed do not have calendars or tasks. Hiri has it all and works really well with Office 365 kevkavJan 2017 • 1 agrees and 0 disagrees Disagree   Agree
    • I like how it helps our company to be more productive and focused on tasks. Th UI/UX is much better than Outlook aleksandarbibovskiJan 2017 Disagree   Agree
  • Pantheon Mail

    Pantheon Mail is a free open source email client forked by the elementary OS community from Geary . Features Modern and straightforward interface Quick account setup Supports Gmail, Yahoo! Mail, Outlook.com, and popular IMAP servers (Dovecot, Cyrus, Zimbra, etc.

    Free Open Source Linux elementary OS

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  • BusyCal

    BusyCal is the most powerful, flexible, reliable calendar app for macOS. It's packed with time-saving features and compatible with all leading cloud services including iCloud, Google, Exchange and more. BusyCal displays your calendar in Day, Week, Month, Year and List views. What makes BusyCal unique is its ability to customize these views to more precisely meet your needs.

    Commercial $ $ $ Mac

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  • sup

    Sup is a console-based email client for people with a lot of email. It supports tagging, very fast full-text search, automatic contact- list management, custom code insertion via a hook system, and more. If you're the type of person who treats email as an extension of your long-term memory, Sup is for you. Sup makes it easy to: Handle massive amounts of email. Mix email from different sources: mbox files and maildirs.

    Free Open Source Linux

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  • Astro

    Astro is a modern email and calendar client powered by artificial intelligence, and built for people and teams. With Priority Inbox, Unsubscribe, Mute, Snooze, Send Later, and Swipes, managing your email is simple and fast. Astrobot helps you declutter your inbox and makes sure you don’t miss the important stuff in your day. It tells you when to unsubscribe and when to respond.

    Free Mac Android iPhone iPad Slack ... Amazon Echo (Alexa Voice Service)

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  • MailMate

    MailMate is an IMAP e-mail client for Mac featuring extensive keyboard control, Markdown supported email composition, advanced search conditions and drill-down search links, equally advanced smart mailboxes, automatic signature handling, cryptographic encryption/signing (OpenPGP and S/MIME), tagging, multiple notification methods, alternative message viewer layouts including a widescreen layout, and much more.

    Commercial $ $ $ Mac OS X S/MIME OpenPGP

    No features added Add a feature

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  • aCalendar

    Android calendar-app showing the weeks of the year (week numbers), 21 languages, syncable with Google Calendar: FEATURES * intuitive navigation with smooth transitions * day, week & month calendar * 48 colors per calendar, per-event color if supported by the calendar (Android Jelly Bean with Google Calendar only) * flexible recurrences (e.g.

    Freemium $ $ $ Android

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