get https://sandbox-api.onsched.com/setup/v1/companies/email/templates/
Use this endpoint to return the requested Email Template. If it wasn't customized the default template is returned. The response content is in html format. A valid emailTemplate name is required. Find template names by using the: GET /setup/v1/companies/email/templates endpoint. Note: The master template cannot be accessed here.
To create custom company email templates, go to the POST /setup/v1/locations/{id}/email/templates endpoint and create a template using the Primary Business Location Id.