This article is about the device software. For web platforms, see Outlook.com and Outlook on the web.
Microsoft Outlook
Microsoft Office Outlook.com (2018–present).svg
An email inbox in Outlook (365-only UI version), running on Windows 10
An email inbox in Outlook (365-only UI version), running on Windows 10
Developer(s) Microsoft Corporation
Stable release(s)
Office 365 2011 (16.0.13426.20274) / November 23, 2020; 41 days ago[1]
One-time purchase 2019 (16.0.13328.20356) / September 24, 2018; 2 years ago[2]
Operating system Microsoft Windows
Type Personal information manager
License Trialware
Website www.microsoft.com/outlook
Microsoft Outlook for Mac
Outlook for Mac 2016
Outlook for Mac 2016
Developer(s) Microsoft Corporation
Stable release
16.32 (Build 19120802) / December 10, 2019; 12 months ago[3]
Operating system macOS
Type Personal information manager
License Proprietary commercial software
Website www.microsoft.com/mac/outlook
Microsoft Outlook for Android
Outlook for Android
Outlook for Android
Developer(s) Microsoft Corporation
Stable release
4.0.60 / November 5, 2019; 13 months ago[4]
Operating system Android 5.0 and later
Type Personal information manager
License Proprietary commercial software
Website products.office.com/en-us/outlook-mobile-for-android-and-iOS
Microsoft Outlook for iOS
Developer(s) Microsoft Corporation
Stable release
4.9.0 / October 28, 2019; 14 months ago[5]
Operating system iOS
Type Personal information manager
License Proprietary commercial software
Website products.office.com/en-us/outlook-mobile-for-android-and-ios
Microsoft Outlook is a personal information manager software system from Microsoft, available as a part of the Microsoft Office suite. Though primarily an email client, Outlook also includes such functions as calendaring, task managing, contact managing, note-taking, journal logging, and web browsing.

Individuals can use Outlook as a stand-alone application; organizations can deploy it as multi-user software (through Microsoft Exchange Server or SharePoint) for such shared functions as mailboxes, calendars, folders, data aggregation (i.e., SharePoint lists), and appointment scheduling. Microsoft has released apps for most mobile platforms, including iOS and Android. In addition, Windows Phone devices can synchronize almost all Outlook data to Outlook Mobile. Using Microsoft Visual Studio, developers can also build their own custom software that works with Outlook and Office components.[6]

In March 2020 Microsoft announced the launch of a series of new features to appeal to business customers of its Teams platform, in addition to the features[which?] introduced the previous month. The chat and collaboration module now includes more efficient and integrated waypoints, designed[by whom?] to simplify group work for organizations and to encourage such an organization to adopt the Microsoft platform to become the go-to company chat-platform.