Hello there, I am testing marketing hub right now and currently I use Mautic / Hubspot for some business / personal marketing flows I have.

I would like to use marketing hub for an onboarding process, sending the user email and other custom fields via API. Curently, the only endpoint I found would be "Subscribe". But Since this is for transactional in-app onboarding, I believe having to accept the confirmation email wouldn't be ideal.

Any ideas on how to achieve that?