To understand this in more depth, you need to analyze how the main script works.
- The script will then record all of the visitors to your website with a session_id. This session_id is generated by a GET request from the in-automate.sendinblue.com/p application, which will retrieve the session_id along with other information such as the "key" linked to your Sendinblue account and the page visited, for example.
This request will initiate a call identify, which will define the email address for the session_id based on where you added your script. So the email address will be linked to a session_id for the duration of the call identify.
- The final step – from the Sendinblue database - involves linking the session_id with the "key" from your Sendinblue account and the email address if it is included in your contact database.