Just drag and drop the questions you want to ask right into place – no technical expertise necessary. Create custom fields, or select from a dozen different field types such as open text fields, dropdowns menus, radio select buttons,
A lead flow is HubSpot's take on a pop-up form. There are three components to a lead flow --- the callout (initial pop-up, with a button), the form (which appears once the button in the callout is clicked), and the thank-you message.
Resource: Forms User Guide
HubSpot forms help you gather new contacts for your company and obtain additional information from your existing contacts.
When editing a HubSpot landing page, you can link a form to it by using the Form drop-down menu to select the form you created. Please note that your landing page must contain a Form module in order to add the form.
HubSpot understands that some of our customers maintain a website not hosted on
Resource: Using HubSpot forms on your external website & How to create a lead flow