Email Digests and Article Activity

Good Day, 

I've noticed that the Email Digests don't capture any activity in the Article application. When looking into the Email Digest settings it looks like GUIDs for each activity is required for the information to populate in the email. 

Where do I find the GUIDs to ensure that activities in Articles are captured as part of the digest, and understand which applications/ activities are included in the current digest that is sent? 

Parents Reply Children