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Outlook Web App

Outlook on the web
Outlook logo and wordmark.svg
Outlook on the web inbox.png
Outlook Mail inbox in Outlook on the web (Office 365)
Developer(s) Microsoft
Type Personal information manager (Webmail, calendaring, contacts, tasks)
License Web version: Not licensed
On-premises: Trialware
Website products.office.com/en-us/exchange/exchange-online

Outlook on the web (previously called Exchange Web Connect, Outlook Web Access, and Outlook Web App in Office 365 and Exchange Server 2013) is a personal information manager web app from Microsoft. It is included in Office 365, Exchange Server, and Exchange Online. It includes a web-based email client, a calendar tool, a contact manager, and a task manager. It also includes add-in integration, Skype on the web, and alerts as well as unified themes that span across all the web apps. Outlook on the web is navigated using the App Launcher icon which brings down a list of web apps from which the user may choose. In 2015, Microsoft started upgrading Outlook.com to use Outlook on the web and the Office 365 infrastructure, which was almost complete in January 2017 after it dropped the new Outlook.com out of preview.

Outlook Mail is the webmail component of Outlook on the web. It has an interface similar to the mail part of Outlook Web App before it. The default view is a three column view with folders and groups on the left, email in the center, and on the right the selected message. As of the 2015 Outlook on the web update, Microsoft introduced the ability to pin messages, sweep, archive, undo, and richer image editing features. Outlook Mail added the ability to connect to other services such as GitHub and Twitter through Office 365 Connectors. Actionable Messages in emails allows a user to complete a task from within the email, such as retweeting a Tweet on Twitter or setting a meeting date on a calendar.

Outlook on the web supports S/MIME and includes features for managing calendars, contacts, tasks, documents (used with SharePoint or Office Web Apps), and other mailbox content. In the Exchange 2007 release, Outlook on the web (still called Outlook Web App at the time) also offers read-only access to documents stored in SharePoint sites and network UNC shares.


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