I've seen some helpful answers to this question, but none that have the script specify to list only new files/folders added to the parent folder listed. I think what I'm trying to do is combine this from user Tedinoz:
https://webapps.stackexchange.com/a/121447/250578 and this
https://gist.github.com/wdziemia/c45a59d13510fcd2f273f8e0583cb8d9 (except not for email notification).
Is there an easy modification to Tedinoz's code to only find files added within the last 24 hours (for example)? I do not want to list files that already exist.