MessageAttachment element (preview)

Configures your event-based add-in to activate on the OnMessageReadWithCustomAttachment event.

Add-in type: Mail

Valid only in these VersionOverrides schemas:

• Mail 1.1

For more information, see Version overrides in the add-in only manifest.

Syntax

<ExtensionPoint xsi:type="LaunchEvent">
  <LaunchEvents>
    <LaunchEvent Type="OnMessageReadWithCustomAttachment" FunctionName="onMessageReadWithCustomAttachmentHandler">
      <MessageAttachments>
        <MessageAttachment AttachmentExtension="xml"/>
        <MessageAttachment AttachmentExtension="json"/>
      </MessageAttachments>
    </LaunchEvent>
  </LaunchEvents>
  <!-- Identifies the runtime to be used (also referenced by the Runtime element). -->
  <SourceLocation resid="WebViewRuntime.Url"/>
</ExtensionPoint>

Contained in

• MessageAttachments

Attributes

Attribute	Required	Description
AttachmentExtension	Yes	Specifies the file extension of the attachment included in a message on which the OnMessageReadWithCustomAttachment event occurs. The file extension value is limited to 50 characters and must not include a period.

Child elements

None.

See also

• LaunchEvent element
• Activate add-ins with events