Set up Hunter.io integration
Get your API key on hunter.io 👇
From you account, click on your profile in the upper-right corner and select API:

Now you can simply copy the API key:

Now go to Captain Data; to the integration tab and select Hunter.io :
Click on Hunter.io integration tab and click on Connect a New Account :
Give your account a name. Now you have to get the API Key 🗝:
Paste the key you previously copied on your Captain Data account, and click on Save account 👇:
And voilà, you're setup 🚀