Enabling a share, email will be sent immediatly


I have an installation of NC with LDAP users . If I share a file, select the user on the list, after selected the user, the share send immediatly an email to the user without an aknowledge for the system.
Else if the use modify the nome or the expire date, a new notification will be sent.
There’s the possibility to allow the user when enalbe the sharing and sent the emails/notifications ?