message: [Outlook] (preview) Add entry for the OnMessageFromChanged event
diff: ---
  title: Outlook add-in API preview requirement set
  description: Features and APIs that are currently in preview for Outlook add-ins.
  -ms.date: 10/10/2022
  +ms.date: 12/20/2022
  ms.localizationpriority: medium
  ---
  @@ -83,6 +83,18 @@ Added a new object that allows you to manage the delivery date and time of a mes
  ---
  +### Event-based activation: OnMessageFromChanged event
  +
  +Added support for the `OnMessageFromChanged` event in [event-based activation add-ins](/office/dev/add-ins/outlook/autolaunch). To learn more about this event, see [Automatically update your signature when switching between mail accounts (preview)](/office/dev/add-ins/outlook/onmessagefromchanged-onappointmentfromchanged-events).
  +
  +**Available in**: Outlook on Windows (connected to a Microsoft 365 subscription)
  +
  +<br>
  +
  +---
  +
  +---
  +
  ### Item multi-select
  #### [Office.context.mailbox.getSelectedItemsAsync](office.context.mailbox.md#methods)
  