This endpoint opts an email address into the specified merchant’s loyalty
marketing. This will enable merchants to send targeted marketing to these
subscribers in order to encourage loyalty opt-in.It is expected that all user information provided to Thanx via API must have
gotten explicit user consent to participate in the merchant’s marketing.For integrations intending to sign up a user directly for a merchant’s loyalty
program should be integrating with the Consumer APIs. This
integration is more intensive, as it requires strict compliance with the
legal requirements for user creation and must
include a complete enrollment flow (prompt users for card linkage, display
introductory incentives). Please reach out to our team at
integrations@thanx.com if you are
interested in this type of integration instead.This endpoint only requires merchant_id and email to be specified, but
accepts additional subscriber information.This endpoint responds with a 201 for any valid email address that is sent,
even if the email address is already captured in the system. To avoid
unintentional PII exposure for existing records in the system, this API responds
only with accepted email address. The only time this endpoint 400s is when the
input email address is invalid.