In order to start sending emails using this service you will first need to retrieve the API key from your sendinblue account.
After accessing your account please navigate to the SMTP & API section by hovering over the account name in the top right corner then selecting the menu item in the hover menu. Here you will need to create a new api v3 key using the Create a new api key button.
This API key needs to be added in your WordPress admin panel, Kali Forms > SMTP Settings area.
