Notifications on upload/download not sending straight away

hi all,

created a user and it sent them an activation email

the user has reset his password and can login and they have also went in there personnal section to email them about everything (basically they have ticked all the tick boxes under “mail”, “stream”, “list your own actions”, “notify about your own actions” and send emails “hourly” )

but the user isnt being sent emails straight away when they upload a new folder or text file

how can i send the email straight away instead of just hourly updates?

many thanks,