Set up Neverbounce integration
Once you signed up to neverbounce.com you'll arrive on the dashboard.
From there, click on Apps
Then hit CREATE NEW APP
Choose Custom Integration
Create the application, give it a name and so on.
Then head back to Apps and choose your new app. You'll see the following:
Copy your API key and paste it in Captain Data bot's settings:
And voilà, you're setup :)