Verify form submissions with reCAPTCHA v3

Use reCAPTCHA v3 to add invisible bot detection to your HubSpot forms. Google’s reCAPTCHA v3 verifies whether form submissions are made by a person or a bot without needing interaction from the visitor. This helps reduce spam while keeping your form experience seamless for your visitors.

Customize the reCAPTCHA spam sensitivity used to detect suspicious or bot activity in your forms. For example, if you're experiencing excess spam activity, you can increase your spam sensitivity for stronger spam protection across your forms.

Available reCAPTCHA versions

• ReCAPTCHA v2: prompts visitors with an interactive checkbox or image puzzle before the form can be submitted.
• ReCAPTCHA v3: detects bot activity in the background without displaying a CAPTCHA challenge.

Customize reCAPTCHA sensitivity

When using reCAPTCHA, set the spam sensitivity threshold to manage how you want to filter bot activity. The spam sensitivity setting applies to all forms using reCAPTCHA v2 or v3.

1. In your HubSpot account, click the settings icon in the top navigation bar.

2. In the left sidebar menu, under Tools, navigate to Marketing > Forms.
3. Click the Submissions Settings tab.
4. In the ReCAPTCHA section, under Current Setting, enter a value between 0.1 (least strict) and 0.9 (most strict). 
   • Increase the value for stronger spam protection.
   • Decrease the value for lower spam sensitivity (e.g., if your forms are marking legitimate submissions as spam).
5. At the bottom, click Save.

Manage reCAPTCHA for an individual form

Turn on reCAPTCHA for individual forms, then select the reCAPTCHA version. The steps for the updated form editor and legacy form editor differ.

Use 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 top left, click the + add icon.
4. In the left panel, click Other.
5. Under the Security & Privacy section, click and drag reCAPTCHA onto the form preview on the right to include the element on your form.
6. In the left panel, select the reCAPTCHA version:
   • ReCAPTCHA v3: monitors activity in the background without displaying a visible CAPTCHA challenge.
   • ReCAPTCHA v2: prompts visitors to complete an interactive checkbox or image puzzle before submitting.
     

7. To update the reCAPTCHA version already added to your form, hover over the reCAPTCHA element in the form preview and click the edit edit icon.
   • In the left panel, select the reCAPTCHA version.
   • In the dialog box, click Switch to [version] to update the version.
8. To remove reCAPTCHA from the form, hover over the reCAPTCHA element and click the delete delete icon.
   • In the dialog box, click Remove reCAPTCHA.
9. In the top right, click Review and update.

Use 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 left panel, on the Existing properties tab, click to expand the Other form elements section.
4. Toggle the CAPTCHA (spam prevention) switch on.
5. To manage the reCAPTCHA version used in the form, click the reCAPTCHA element in the form preview.
6. In the left panel, select your reCAPTCHA version:
   • ReCAPTCHA v3: monitors activity in the background without displaying a visible CAPTCHA challenge.
   • ReCAPTCHA v2: prompts visitors to complete an interactive checkbox or image puzzle before submitting.
7. In the dialog box, click Switch to [version] to update the reCAPTCHA version.
8. To remove reCAPTCHA from the form, in the left panel under Other form elements, toggle the CAPTCHA (spam prevention) switch off.
   • In the dialog box, click Remove reCAPTCHA.
9. In the top right, click Update or Publish.