By far the best integration with Hubspot!

CRM Perks is, by far, the best integration between wordpress forms and Hubspot. I already used it in many sites with both GravityForms and WPForms.

I tested almost all the options in the market and CRM perks is the only one that has these two feature:
– The integration setup can be done through hubspot forms object API. The other plugins only have the API integration trough Contacts table. The forms object is the best way to integrate with hubspot as it makes much easier to organize the data. Additionally, you can add contacts without email, which is very useful for bottom of funnel conversions.
– The integrations passes along the hubspot native cookie (HubSpot usertoken | hutk) so all the analytics data are seamless integrated (it basically brings all the data that a native hubspot form would bring).