Digital Products
Sends a notification when a Digital Products Product or License event is triggered.
Requires Digital Products
Only available when the Digital Products plugin is installed.
Products
A digital Product is a downloadable item in your catalog (an ebook, a piece of software, a music track).
Product events cover the catalog lifecycle: launches, edits, removals, and restores.

When a product is saved
Fires when a digital Product is saved. Covers both creation and updates.
When a product is deleted
Fires when a digital Product is deleted. Covers both soft deletes (moved to the trash) and hard deletes.
When a product is restored
Fires when a soft-deleted digital Product is restored from the trash.
Licenses
A License is what a customer gets after paying for a digital Product.
License events are where you wire up customer-facing notifications: send the key, grant download access, or alert someone when access gets revoked.

When a license is saved
Fires when a License is created or updated. Most often used to email the customer their key the moment their order is paid.
When a license is deleted
Fires when a License is deleted. Useful for notifying customers their access has been revoked, or for alerting admins about refunded purchases.
When a license is restored
Fires when a soft-deleted License is restored from the trash.