Outgoing email account - Admin

Hi (SugarCRM Ent v25.01)

As the system administrator, i have created outgoing accounts that are the preferred accounts for given teams. However, some users have set up their own. These cause these out going mail accounts to be listed in the TO: field of emails.

As the Admin, i appear to have no way to prevent users from setting up outgoing account or any way of editing/deleting.

Is this correct? What can i do to delete duplicate accounts and prevent new ones?

Kind regards john