Block form submissions from specific email domains or free email providers

Block form submissions from email addresses that use free email providers or specific email domains. For example, blocking free providers like Gmail or Yahoo limits submissions to business contacts, while blocking specific domains reduces spam and unwanted submissions.

When a visitor enters a blocked email domain, they'll be prompted to enter a different email address before submitting the form. Configure blocked email domains on individual forms, or use an account-level setting to apply them across all your forms.

Block email domains using account-level settings

1. In your HubSpot account, click the settings icon in the top navigation bar.
2. In the left sidebar menu, navigate to Marketing > Forms.
3. Click the Submissions Settings tab.
4. To block specific domains:
   • In the Email domains to block field, enter the domains you want to block, separated by commas (e.g., domainexample.com, domaintest.com).
   • At the bottom left, click Save.
5. To block free email providers:
   • Toggle the Block free email domains switch on.
   • At the bottom left, click Save.

Once saved, any blocked domains or free email providers will apply across all your HubSpot forms.

Block email domains on individual forms

Block email domains in the updated form editor

1. In your HubSpot account, click More, then navigate to Marketing > Forms. If More doesn't appear in your account, navigate to Marketing > Forms directly.
2. Create a new form or hover over an existing form and click Edit.
3. In the left sidebar, click the settings settings icon.
4. In the left panel, click the Submission settings tab.
5. To block specific domains:
   • Enter domains in the Email domains to block field. 
   • Enter only the root domain without the www prefix or @ symbol. For example, enter gmail.com, not www.gmail.com or @gmail.com.
6. To block submissions from HubSpot's default list of free domains, toggle the Block free email providers switch on.
7. In the top right, click Review and update.

Block email domains in the legacy form editor

1. In your HubSpot account, click More, then navigate to Marketing > Forms. If More doesn't appear in your account, navigate to Marketing > Forms directly.
2. Hover over a form and click Edit. 
3. In the form editor, hover over the Email field and click the edit edit icon.
4. To block specific domains:
   • In the Email domains to block field, enter the domains you want to block, separated by commas (e.g., domainexample.com, domaintest.com).
   • Enter only the root domain without the www prefix or @ symbol. For example, enter gmail.com, not www.gmail.com or @gmail.com.
5. To block HubSpot's default list of free domains, select the Block free email providers checkbox.
6. In the top right, click Update or Publish.