How to switch off Email Notifications?

At the Pro Sites settings page there is an area called "Email Notifications". I would like to switch there Email Notifications off as I am using WHMCS and get double emails...

Especially I would like to disable the one with the subject "Your Pro Site status has expired".

P.S.- may be if I delete everything from the fields (at the Pro Sites settings page) this disable notifications due to empty letters? :slight_smile: