Skip to content

[Outlook] (event-based activation) Document the OnAttachmentAction event #2549

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Draft
samantharamon wants to merge 1 commit into
base: main
Choose a base branch
from
Draft

[Outlook] (event-based activation) Document the OnAttachmentAction event #2549

Changes from all commits
Commits
Show all changes
1 commit
Select commit
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
3 changes: 2 additions & 1 deletion docs/requirement-sets/outlook/outlook-requirement-set-preview.md
View file
Open in desktop
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: 02/05/2026
ms.date: 05/27/2026
ms.topic: whats-new
ms.localizationpriority: medium
---
Expand Down Expand Up @@ -29,6 +29,7 @@ The preview requirement set includes all of the features of [requirement set 1.1

The following features are in preview.

- Added the `OnAttachmentAction` event to run operations when an attachment is opened, saved, or downloaded. For more information, see [Check an attachment before it's opened, saved, or downloaded (preview)](/office/dev/add-ins/outlook/on-attachment-action-event).
- Added an event and objects to support [decrypting a message and its attachments](/office/dev/add-ins/outlook/encryption-decryption).
- Extended support for the `contentId` property to get the content identifier of an inline attachment in classic Outlook on Windows.
- Added a method to check if Exchange Web Services (EWS) tokens are supported in an organization.
Expand Down