The identify function identifies a visitor in the Unless system.
Txt.identify(email, data, identifier)
The arguments for the identify function are as follows:
Identify a visitor by email address. Use this for example when a visitor logs into your system. The email will be used to integrate Unless enriched data to other systems.
Store additional traits to the visitor, see the updateProfile function for a description of the data format.
Optionally, use your own unique identifier to associate with our records.