How to add content to a domain not connected to hubspot

[#1]

Our site is built using Ruby on rails; we currently route all our emails through HubSpot. However, the domain is not connected to HubSpot as there is no way we could host all 5k of the page on here. My question is can you publish content to the site using the API OAuth and if so can someone point me in the right direction, or suggest an alternative way

[Dadams]

Hi @Jamieb

You can use the COS Page Publishing API to create or update pages hosted with HubSpot:

developers.hubspot.com

Create a new page | COS Page Publishing API

POST /content/api/v2/pages - Create a new object