Hi Jennifer,

You can build your Workflow by first using the Date Token Calculator activity to create a date token that will subtract 8 days from the current date, and then perform a search using the Search Repository activity to look for files in the specific folder that were created using the token that was generated from the Date Token Calculator. Depending on how you want that email to be sent, you could either send an individual email for each document that the Search Repository activity finds by adding a For Each Entry activity after the Search Repository activity, then add an Email activity; OR you could create a token that would compile a list of entries that were found and then send one email with that list.

To get the Workflow to only run on Fridays, you would create the Starting Rule to be on a Schedule instead of a Condition. You can make that Schedule to be every Friday at a specific time. 

I hope that helps!

Molly