Step One: Login to VidJack and Create a campaign (if you have not already done so). On the top menu click on Integration
Click on Sendinblue and login to your account to get the API key
Step Two: Login to your Sendinblue account, click your account name at the top right corner of the dashboard, a drop-down will appear then click on SMTP & API
Step Three: Go back to VidJack and enter the API Key you copied