Outlook add-in API requirement set 1.12

The Outlook add-in API subset of the Office JavaScript API includes objects, methods, properties, and events that you can use in an Outlook add-in.

Note

This documentation is for a requirement set other than the latest requirement set.

What's new in 1.12?

Requirement set 1.12 includes all of the features of requirement set 1.11. It added the following features.

Added new events for event-based activation.
Added send mode options for add-ins that use the OnMessageSend or OnAppointmentSend event.
Added support to display an error message to the user in event-based activation add-ins.

Added new events for event-based activation: Adds support for the following events.
- OnMessageSend
- OnAppointmentSend
- OnMessageCompose
- OnAppointmentOrganizer
Modified the LaunchEvent manifest element: Adds the SendMode attribute used by the OnMessageSend and OnAppointmentSend events. This attribute specifies options available to the user if an add-in stops an item from being sent or if the add-in is unavailable.
Created Office.SmartAlertsEventCompletedOptions: Adds the allowEvent and errorMessage properties. The allowEvent property indicates if the handled event should continue execution or be canceled. If allowEvent is set to false when the add-in's condition isn't met, the errorMessage property can be used to display a message to the user.