Just as you can add a single contact or import a list of contacts without email addresses, a contact can submit a form without providing their email address and still be added to your database.
In your HubSpot account, click the settings iconsettings in the main navigation bar.
In the left sidebar menu, navigate to Marketing > Forms.
Click the Submission Settings tab, then click to toggle the Allow submissions without email addressesto create contacts switch on.
In the bottom left, click Save.
With this setting enabled, submissions on forms without an email address field will create new contacts. HubSpot will deduplicate these contacts based on their cookies. If this setting is disabled and you create a form without an email address, you will see a prompt to add the email field to your form to allow submissions without email addresses to create contacts.
Please note: although contacts created via form submissions without an email address deduplicate based on cookies, this setting is independent of the cookie tracking setting in your form options. If cookie tracking is on and two people with the same cookie fill out a form with no email address (e.g., if they were using the same device), the submissions will be associated with the same contact record.
If you're using a custom email field and have this setting enabled, form submissions will create contacts. However, because the default HubSpot Email property has no value, these contacts cannot be emailed or be enrolled in workflows.