Microsoft Office Outlook Alternatives for Linux

Microsoft Office Outlook is not available for Linux but there are plenty of alternatives that runs on Linux with similar functionality. The most popular Linux alternative is Small Thunderbird iconThunderbird, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Microsoft Office Outlook and many of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to Microsoft Office Outlook are Small Evolution iconEvolution (Free, Open Source), Small Mailspring iconMailspring (Freemium), Small Geary iconGeary (Free, Open Source) and Small Claws Mail iconClaws Mail (Free, Open Source).

Part of the Microsoft Office Suite, Outlook is a personal information manager that lets you manage your e-mail, calendar, contacts, and tasks. If you're looking for more info about Microsoft Office Outlook like screenshots, reviews and comments you should visit our info page about it. Below you find the best alternatives.

The list of alternatives was last updated: 7/1/2020 2:08:00 PM

Alternatives to Microsoft Office Outlook for Linux with any license

  • Thunderbird

    Thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is modeled after Mozilla Firefox. It supports POP (storing mail locally on your hard drive so that it can be accessed without an internet connection), and IMAP. It features excellent mail filter capabilities and management. Thunderbird has strong support for using multiple accounts and identities, including automated signature features.

    • I transitioned all ove my computers from Windows to Linux. I had 4 computers so I used four different distributions with different linux bases, Debian and Arch. Thunderbird worked perfectly. The email client is awesome, I think they should devote more development efforts to calender and task management integration. Guest • Sep 2020 Disagree   Agree
    • The interface is just impossible for many people to use. Guest • Aug 2020 • 12 agrees and 3 disagrees Disagree   Agree
    • It can access email server just as outlook sangwenobdiAug 2020 Disagree   Agree
    • ThunderBird es la mejor alternativa open source, ya que puedes personalizarlo, mi recomendación es usar la extención CheckBox, Thunderbird junto a CheckBox (extensión), la mejor APP para Mail Can202Jul 2020 • 1 agrees and 0 disagrees Disagree   Agree
    • Thunderbird is best that other application listed here and GUI is also nice Guest • May 2020 • 2 agrees and 0 disagrees Disagree   Agree
    • IMO, Thunderbird is leaps and bounds ahead of Outlook with a far more fluid and intuitive user interface. Guest • Jan 2020 • 3 agrees and 2 disagrees Disagree   Agree
    • Provides most of those features Outlook offers to users for professional work. The missing features are very specific, and with the additional security, still a nice trade off. oomelyannaooSep 2019 • 3 agrees and 1 disagrees Disagree   Agree
    • For me it is the only alternative to Outlook, if you want power of Outlook and open source there is just no other app. wookahn624Jun 2018 • 9 agrees and 3 disagrees Disagree   Agree
    • It has all the calendaring features and email management features of outlook but is open source Guest • Oct 2019 Disagree   Agree
    • Seems to be more secure than Microsoft alternatives and more easily updatable. Guest • Apr 2017 • 13 agrees and 4 disagrees Disagree   Agree
    • Despite its age, Thunderbird remains the most fully featured email client out there. Various add-ons can extend its functionality, it (now) has a built in calendar and, unlike Outlook, it's free, open source and respects your privacy. JohnFastmanJan 2017 • 15 agrees and 8 disagrees Disagree   Agree
    • It is a really poor software, no featureas, it's complicated. Try to configure a signature with a logo and you will see.... Terrible!! Guest • Jun 2017 • 14 agrees and 26 disagrees Disagree   Agree

    Free Open Source Mac Windows Linux BSD ... Haiku

    Thunderbird icon
  • Evolution

    Evolution is a personal information management application that provides integrated mail, calendaring, address book and task list functionality. Evolution supports a wide range of industry standard data formats and network protocols for information exchange, with an emphasis on standards compliance and security. Evolution can also integrate smoothly with Microsoft Exchange by way of the “Exchange Web Services” (EWS) extension.

    • This would be the best alternative, except that it requires the Gnome desktop, so users of other desktop environments need to look elsewhere. Guest • Jan 2020 • 0 agrees and 2 disagrees Disagree   Agree
    • Fast and User friendly. Light-weight and classic menus really give a touch of old classic office 2003. Easy integration of mails especially exchange mails without facing any bottlenecks. Guest • Sep 2018 • 1 agrees and 0 disagrees Disagree   Agree
    • I've found it better than thunderbird and it can work with exchange just with one free plugin Guest • Jan 2020 • 0 agrees and 1 disagrees Disagree   Agree
    • Support for EWS allows me to connect to exchange and get all the benefits like contacts and calendar I wouldn't so easily get on Thunderbird. Also it nicely integrates with the built in Ubuntu calendar as well which is a big plus. Guest • Jul 2018 • 2 agrees and 1 disagrees Disagree   Agree

    Free Open Source Linux BSD S/MIME GNOME OpenPGP

    Evolution icon
  • Claws Mail

    Claws Mail is an email client (and news reader), based on GTK+, featuring Quick response Graceful, and sophisticated interface Easy configuration, intuitive operation Abundant features Extensibility Robustness and stability

    • Claws Mail is email only, does not have many of the features of Outlook. Displaying HTML mail is sketchy at best. Guest • Jan 2020 • 0 agrees and 1 disagrees Disagree   Agree

    Free Open Source Windows Linux BSD

    Claws Mail icon
  • Geary

    Geary is an email application built around conversations, for the GNOME 3 desktop. It is designed to let you read your email quickly and effortlessly. Its interface is based on conversations, so you can easily read an entire discussion without having to click from message to message. Features Modern and straightforward interface Quick account setup Supports Gmail, Yahoo! Mail,, and popular IMAP servers (Dovecot, Cyrus, Zimbra, etc.

    Free Open Source Linux Chrome OS BSD GNOME

    Geary icon
  • 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.

    • Beautiful theme options with custom designed themes available. I tried thunderbird a few times but always came back to mailspring. I LOVE the "views" feature that shows you how many times an email was opened and if it was forwarded by the recipient! Guest • Jul 2019 • 2 agrees and 2 disagrees Disagree   Agree

    Freemium $ $ $ Mac Windows Linux Arch Linux Fedora ... Ubuntu

    Mailspring 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 threading, MIME support (including RFC2047 support for encoded headers), PGP/MIME (RFC2015), various features to support mailing lists, including list-reply, active development community, POP3 support, IMAP support.

    • mutt is email only, terminal based. Guest • Jan 2020 • 0 agrees and 1 disagrees Disagree   Agree
    • Powerful configuration is possible with mutt, and vim in the terminal. scholasticphilosopherMar 2018 • 2 agrees and 2 disagrees Disagree   Agree

    Free Open Source Mac Windows Linux Xfce

    Mutt icon
  • 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

    Sylpheed icon
  • 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.

    • This is a very integrated suite of programs offering all the functionality of Outlook. Native to KDE's Plasma desktop environment. Guest • Jan 2020 Disagree   Agree

    Free Open Source Linux BSD

    Kontact - KMail icon
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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 Linux

    Kontact icon
  • 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 (, 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 - Uses Microsoft's own protocol - EWS.

    • Discontinued
      According to Wikipedia it hasn't been updated since 2018. People are also complaining about the lack of response from the team.
    • 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 • 1 agrees and 1 disagrees Disagree   Agree

    Commercial $ $ $ Mac Windows Linux

    Hiri icon

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