i’m wanting to put a proof of concept into our system of sending e-mails via single send API With Hubspot as we already have integrations with Hubspot. However, I was hoping that hubspot would have some kind of trial period for development/integrations, their live chat was unable to find an answer for me and referred me here. Can anyone tell me if there is a demo/dev environment with Transactional emails that we can use? We already have a dev env on hubspot but it doesn’t have Transactional emails addon enabled. Is this possible without the $1,000 per month subscription?