You can easily delete an API Token by going to “API & Form” > “API Tokens“. In your tokens overview you’ll have the chance to delete or edit a token. Simple click on the icon that looks like a red cross (☓) in order to delete the token. Note that if you delete a token you’ll lose all your access to you Get a Newsletter account through the API integration with your system.
Deleting an API token is a good idea when there’s been unauthorized access to your system. Simply log in to the tool and remove your tokens.