EmailSupervisor monitors all outgoing emails from your computer and alerts you whenever an unauthorized or unknown program is trying to send an email in the background. The program can detect any email client that uses the SMTP protocol, therefore it will virtually detect any email that is sent, regardless of the email software that is used. It offers rules that allow you to authorize specific email clients and/or recipients, as well as attachment types. EmailSupervisor can warn you and prompt for action whenever an unauthorized email is intercepted, or automatically block and log them based on your rules.

The license of this software is Free Trial Software, the price is $39.95, you can free download and get a free trial.