We're using the company endpoint to get emails for one domain.

You pass in the domain, then pass in your API key (which you get from your account settings) as a header.

data = {'domain': domain}
headers = {'X-Api-Key': 'yourApiKey'}

resp = requests.post('https://api.anymailfinder.com/v4.0/search/company.json', data=data, headers=headers)

data = json.loads(resp.content)

Remember, it's a POST request!

You can begin with the API docs here: https://anymailfinder.com/api/

If you want, test the API in the www.getpostman.com app first. It's a good app :)