We have an external agency that sends us leads.
Currently they send them via email. We need them to send all leads directly into our Hubspot.
They use forms to collect the data and then they send it to us, we need them to send it automatically to our Hubspot.
I have our Hubspot API key, but how do I proceed from here? Is the API key needed in this case and what do I do with it? Is there another way to get the leads from an external source?