My boss was worried his email account was hacked so he changed his password. One of his friends uses Streak email tracker system. A few days ago, they were together eating lunch and his friend received notification that my boss was reading the email she sent him (my boss was not opening those emails). So my boss thought his email was hacked again.
My question is, this email tracking system will send out a notification every time when the email is opened? Do EEs think this "hacking" theory is legit or it will happen to all the tracking system. thanks