To integrate with Customer.io, you will need to add it as a destination in your system.

During this process, two crucial pieces of information are required for the connection: the 'SITE ID' and the 'API KEY'. These can be located in your Customer.io account settings.

Here's how to find them:

• Log into your Customer.io account.
• Click on the cogwheel icon situated at the top right corner of the screen to access settings.
• Navigate to the 'API Credentials' section, which can be found at this link.
• Under the 'Tracking API Keys' section, you will find both your 'SITE ID' and 'API KEY'.

Once you have these details, copy and paste them into the appropriate fields within Datagran. Within this setup, ensure you select the action to 'create and update Customer', with the lookup field being 'email'.

This integration is designed to either create or update customer profiles in Customer.io, based on the provided email address. If a customer does not exist in Customer.io, a new profile will be created. Conversely, if a customer already exists, their attributes will be updated according to the information you provide. This applies to both existing attributes in Customer.io, which will be updated, and new attributes, which will be created.