Before using the lemlist REST APIs, you must have a valid lemlist API key. Below are the steps you will need to create a lemlist API key.
1. Open a browser tab and Log In to your lemlist Account.
2. Go to SETTINGS → TEAM SETTINGS → INTEGRATIONS.
Once you generate your API key, be careful to copy-paste it because you will only see it once. Then, for security reasons, if you lose that key, you must develop a new one and change the key in every component of your tech stack that uses it.