Hi Luc,
In order to have the PI periodcial send reports using email you will need to carry out the following steps:
1- Update your PI to 1.16.1
2- Make sure to Configure your SMTP server in your Notifier App,
3- Create the report and enable the " Periodic Scheduling" switch, there you will be able to define the emails that will recieve this report based on the period that you previously defined: