Hi, I'm looking to use the Single Send API from an application to notify users of various events. My organization recently purchased this add-on. Reading up on the documentation and trying to get my head around what plumbing needs to be in place, and have a few questions.
My application will invoke the Single Send REST API, specifying an email ID and various contact and custom parameters. From what I can tell, I don't need to create a HubSpot application, as I'm not integrating with any other vendors or applications. Sound correct?
I think I need to use an hapikey for authentication, rather than OAuth 2.0. OAuth authentication seems to be geared towards application integration. Is this understanding correct?
Do I have one, and only one, hapikey? It seems that way looking at the "Integrations" page in my HubSpot portal. I'd like to be able to generate separate hapikey's for use in DEV/QA, and Production environments. Is this possible? Any best-practice guidance on how to manage this?