To configure Findymail on Captain Data, go to https://app.findymail.com/login and log in to your account.
Once on your Findymail account go to the API section on the left:
If you don't have any API set up, go to the name section and name a new API key. Then, click "Create":
An API key has been generated.
Now, copy it in order to paste it on Captain Data:
Go to Captain Data on the Findymail integration and click "Create a new account":
On the modale, select the user you want to associate the account to.
Then, paste your API key in the required section:
Finish by clicking on "Save account" and voila!