Last updated: May 31, 2023
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You can prevent visitors with email addresses containing specific domains from submitting your HubSpot form or pop-up form. To further protect your forms from spam submissions, learn how to enable CAPTCHA on your forms.
Block email domains on a form
You can block either specific email domains or HubSpot's default list of free domains on your forms. When a visitor attempts to enter a blocked domain in the Email field on your form, they will see a message asking them to enter a business email address.
To block email domains on a HubSpot form:
- In your HubSpot account, navigate to Marketing > Lead Capture > Forms.
- Hover over a form and click Edit.
- In the form editor, hover over the Email field and click the edit icon.
- In the Email domains to block field, enter the domains you want to block.
- Each domain should be separated by commas.
- Enter only the root domain without the www prefix or @ symbol. For example, enter gmail.com, not www.gmail.com or @gmail.com.
- To block HubSpot's default list of free domains, select the Block free email providers checkbox.
- In the top right, click Update or Publish.
Block email domains on a pop-up form
Similar to regular forms, you can block either specific email domains or HubSpot's default list of free domains on your pop-up forms. When a visitor attempts to enter a blocked domain in the Email field on your pop-up form, they will see a message asking them to enter a business email address.
To block email domains on a pop-up form:
- In your HubSpot account, navigate to Marketing > Lead Capture > Forms.
- Hover over a pop-up form and click Edit.
- Click the Form tab.
- In the left pane, under the Added fields section, click the pencil icon next to the Email field.
- In the Email domains to block field, enter the domains you want to block.
- Each domain should be separated by commas.
- Enter only the root domain without the www prefix or @ symbol. For example, enter gmail.com, not www.gmail.com or @gmail.com.
- To block HubSpot's default list of free domains, select the Block free email providers checkbox.
- Finish setting up your pop-up form.
