Skip to content
Draft
Changes from all commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
---
title: Outlook add-in API preview requirement set
description: Features and APIs that are currently in preview for Outlook add-ins.
ms.date: 11/03/2025
ms.date: 11/11/2025
ms.topic: whats-new
ms.localizationpriority: medium
---
Expand Down Expand Up @@ -75,6 +75,20 @@ Added a new property that represents if an appointment is an all-day event.

---

### Check if Exchange Web Services (EWS) tokens are supported in an organization

#### [Office.context.mailbox.diagnostics.ews.getTokenStatusAsync](/javascript/api/outlook/office.messagecompose?view=outlook-js-preview&preserve-view=true#outlook-office-ews-gettokenstatusasync-member(1))

Added a method to get the status of EWS callback tokens in an organization.

**Available in**: Outlook on the web, on Windows (new and classic), on Mac, and on mobile devices

<br>

---

---

### Decrypt a message and its attachments

#### [OnMessageRead event](/office/dev/add-ins/develop/event-based-activation#outlook-events)
Expand Down