Custom unsubscribe handling

This endpoint lets you set a global unsubscribed status outside of the subscription pathways native to Customer.io. If you use custom unsubscribe links, you can host a custom unsubscribe page and use this API to send unsubscribe data, associated with a particular delivery, to Customer.io.

NOTE: This endpoint requires a Content-type: application/json header. This endpoint does not require an Authorization header.

Your request sets a person's unsubscribed attribute to true, attributes their unsubscribe request to the individual email/delivery that they unsubscribed from, and lets you segment your audience based on email_unsubscribed events when you use a custom subscription center.

If you use a custom subscription center (managing subscriptions to various types of messages with custom attributes), this request does not set a custom attribute. You must perform a separate request to update a person's custom subscription attributes.