New file shares

Is there an option to notify a user when another user shares a file?
User #1 is author of manual.doc and shares it with User #2. Only when user #2 looks into his Nextcloud environment, he will see that user #1 shared the file.
I appreciate an option that NextCloud send an e-mail to user #2 about the shared file.
Is that possible.

Guido van Harten

Sure, take a look at your personal activity stream settings in your personal preferences. You can ramp up the notification to an hourly basis.