Forms and contacts
Integration can work when the goal is sending form submissions or contact data into HubSpot without changing the website CMS.
Connect Squarespace with HubSpot when the website can stay where it is. Migrate to HubSpot when forms, CRM context, reporting, and website editing should live in one system.
Decision guide
Integration can work when the goal is sending form submissions or contact data into HubSpot without changing the website CMS.
HubSpot tracking can support campaign visibility while content editing remains in Squarespace.
If the site is small and easy to manage, keeping Squarespace and integrating HubSpot can be a reasonable interim step.
Migration trigger
A Squarespace to HubSpot migration is usually the better choice when the team wants HubSpot-native pages, forms, CRM reporting, redirects, and launch QA in one managed setup.