When creating a submission campaign, you'll want to use as few form fields as possible while still collecting the information that is important to your business. Adding too many forms can appear to a user as too many steps to take or needing to give away too much information, and may increase the chance of them deciding not to fill out your campaign form.
Privy customers also have access to add our Hidden form fields to their onsite display campaigns. These forms allow you to gather information about your customers, without ever asking them to fill out the information. That’s why it’s a “hidden field”, it’s a field that’s technically part of the form, but it’s invisible to your visitors.
The information that a Hidden Field collects is called a “detected attribute”. A Detected Attribute is information that is pulled from a visitor’s browser settings or cookies. That information is then added to the hidden field on the form, and recorded in the contact profile in Privy as well as being passed over, when possible and configured through an automation rule, to another system.
IMPORTANT: If you are using an email service provider outside of Privy, it is important to map Privy’s hidden fields to your database. That ensures that all the data you are collecting in your form and associating with your contacts appears in your database in the right spot. Make sure you map these fields before you launch your Privy campaign.