Step One: Find your Recruitee subdomain:
Log into your Recruitee Account and go to your Settings on the bottom left navigation bar that appears on any page.
Scroll down the left navigation bar that appears and click Personal API tokens under Apps and plugins.
Enter below the bolded word that appears before ".recruitee.com" under current company details.
For example, for company-name.recruitee.com, please enter company-name. Do not enter the full {companydomain}.recruitee.com.
Paste your subdomain in Merge Link.
Finding your API Key:
On the same page, click the + New token button.
Enter a name for the token and click Save.
Copy the API key and paste it in the Merge Link window: