25+ 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: 12/3/2018 4:53:00 PM

Alternatives to Microsoft Office Outlook for all platforms with any license

  • Sylpheed

    Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client (mailer, MUA). Sylpheed runs on many systems such as Windows, Linux, BSD, Mac OS X and other Unix-like systems. Sylpheed uses GTK+ GUI toolkit. The newest version of Sylpheed works with GTK+ 2.4 or later (2.6 or later is recommended). Sylpheed is a free software distributed under the GNU GPL (the library part is GNU LGPL). You can freely use, modify and redistribute it under the license.

    Free Open Source Mac Windows Linux BSD PortableApps.com

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  • 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 Windows Linux BSD

    No features added Add a feature

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  • 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.

    • Tricky to configure. Does not speak MAPI, but many Cloudservices. I was not successful to synchronize OwnCloud Guest • Dec 2016 Disagree   Agree

    Freemium $ $ $ Windows Android iPhone

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  • 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.

    • Bundled in win 10 and very simple to use. Great if you just read mail. Guest • Jun 2017 • 0 agrees and 1 disagrees Disagree   Agree

    Free Windows Windows S

    Microsoft Mail and Calendar icon
  • 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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  • 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.

    • 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

    Commercial $ $ $ Mac 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.

    Commercial $ $ $ Mac 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.

    • It is a calendar not an email app Guest • Sep 2015 Disagree   Agree
    • 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

    Free Mac iPhone iPad iCloud

    Apple Calendar icon
  • 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 iPhone

    No features added Add a feature

    Canary Mail icon
  • 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 Windows Linux

    No features added Add a feature

    Zimbra Desktop icon
  • 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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  • Spike

    Spike is the world’s first conversational email app. We’re upgrading the way you work, saving you and your team time, sanity, and a lot of headaches. At Spike, our goal is simple: to bring all of your communication -- your emails, chats, calls, team collaborations, tasks, voice notes, everything -- to one place. It’s what your team has been looking for in a productivity and messaging app, but easier, and all from your inbox.

    Freemium $ $ $ Mac Windows Android iPhone Android Tablet ... iPad

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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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  • VueMinder Calendar

    Take control of your schedule and get reminded wherever and however you want. Instantly access your appointments, tasks, and notes with a simple glance at a transparent calendar that sits right on your Windows desktop. Share calendars and reminders in your home, office, or online. Automatically synchronize with Google Calendar and Outlook. Print calendars using a wide variety of layouts and styles. You can do all these things and much more with VueMinder Calendar.

    Freemium Windows

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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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  • FairEmail

    This email app might be for you if your current email app: takes long to receive or show messages can manage only one mailbox cannot show conversations cannot work offline looks outdated is not maintained stores your email on their servers is closed source, potentially violating your privacy

    Free Open Source Android Android Tablet F-Droid

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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 S/MIME OpenPGP

    No features added Add a feature

    MailMate icon
  • 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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