To get started you will need to access your API Key and Secret under the Admin user in your Admin Console:
Then you can review the end-points that are available in the API Documentation, https://demo.reachapp.co/apidocs and example calls at http://support.reachapp.co/knowledgebase/articles/1174870-example-api-calls
Each account's API is available under it's REACH Admin Console domain.
It is the responsibility of your organization to maintain the code used to interact with the REACH API. Any creation, debugging or updating of your organization’s interface to the REACH API is up to your organization.
We reserve the right to modify, suspend or terminate the Service for any reason, without notice and at any time. Please see our complete Terms and Conditions: http://www.reachapp.co/terms_and_conditions