https://docs.customer.io/journeys/identifying-people/
Add people | Customer.io Docs
You add people to your workspace using their unique, identifiers—normally their email address or ID.
add people customerio docs
https://docs.customer.io/get-started/add-people/
4. Add people | Customer.io Docs
Learn how to add people to Customer.io, and how to get the most out of your data. In Customer.io, we refer to the process of adding a person as identifying...
add people customerio docs