ThankThank Notes is a service that sends hand-written thank you notes to their clients' customers. The thank you notes are customizable and can be sent individually or in bulk.
The ThankThank Notes API is an alternative to ThankThank Notes web form. Instead of filling out a web form for each thank you note batch, the API allows clients to integrate ThankThank Notes functionality into their website and/or CRM system, so ThankThank Notes go out automatically as determined by the client.
Public documentation is not available.