Email notification after getting files via upload into shared folder

I’m using nextcloud 11.0.1 (stable). I created a “Public Input” Folder via Share-Link and getting files is working well.
What I’m missing is a notification mail that informs me (as the user that owns the folder) about received files. I found some similar issues (e.g. Couldn’t to send mail notification about file shares (by links? for example)) but not directly this problem.

Should this work out of the box and I experience a bug or is there an app for this?