First, head over to https://app.datatrics.com/integrations/sendinblue/. Click on the "Install" button, and you will be redirected to the settings screen:

The only thing you need is an API key/token.

How to find your Sendinblue API key:

While logged into your Sendinblue account, click on your name at the top right, then on SMTP & API, or visit this page while logged into your account: https://account.sendinblue.com/advanced/api.

Under the API keys tab, you will find two API keys: one for each version of the Sendinblue API. We support both v2 as well as v3. We do, however, recommend you use v3 because it's the most up-to-date (and supported by Sendinblue) version.

Copy and paste this API key into the token field on the Sendinblue settings page in Datatrics, and click on Save Settings.

Datatrics will use the Sendinblue integration to sync profiles and predictive fields (enrichment sync).