Currently it is possible to request all the users to be notified in order to sign again the VO AUP via the "trigger reacceptance" button in the AUP management page.

When one clicks the button it is shown a confirm dialog that warns about the consequences of this action. Since this action can trigger thousands of email notifications and bother thousands of users, the dialog should be less error prone and request the user to explicitly insert some text ("yes") in order to
start the reacceptance action.