123FormBuilder provides antispam protection measures for your web forms

123FormBuilder offers a variety of antispam protection measures for your web forms.


Captcha images certify that your submitter is a real person and not a robot. You may choose to always show a Captcha image at the bottom of your form, to show a daily changed image, or to use Smart Captcha – this will only appear when your form is abused (for example, when multiple submissions come from the same IP).

To enable captcha, go to your Form Editor and click on the Verification field.

In the left-side panel you can choose one of the following:

  • reCAPTCHA. This option generates the reCaptcha from Google, where the form user needs to tick a checkbox. It appears from the start.
  • Smart Captcha. This option is set by default when creating an online form. The Captcha verification numbers will appear only after the second attempt coming from the same IP address. A different code will be generated each time the form is being accessed.

Limit number of submissions

The number of submissions made from the same IP can be limited to a certain number per hour, day, week, month, year, and eternity. You can also limit the total number of submissions received through the online form.

Limit number of submissions


  1. Hello

    we use 123form in ours webside saraandkate under CMS from WIX.
    i have some questions.

    1.) where/how I can chance the font size from the confirmationinfo, obviously after sending the form
    2.) in the form newsletter an contact on ours webside we have switched on Security Captcha. Visible is a a questian mark, which click with the application explained, how I can suppress the sign “?” where I can switch off this.

    best regards


    1. Hello George!

      To customize the confirmation info, follow our documentation on how to create and manage autoresponders.

      If you want to turn off the Smart Captcha feature, go to the SettingsSecurity section of your form, as described in our documentation on what is smart Captcha and how to use it.

      For more questions or need of assistance, don’t hesitate to contact our support specialists at support@123formbuilder.com or at https://www.123formbuilder.com/contactus.html.


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Frequently Asked Questions

Here is a list of the most frequently asked questions. For more FAQs, please browse through the  FAQs page.

Is this service free?
Yes, we offer a free form builder service. Just sign up to the Basic plan and you are all set. This plan is forever free, but you are limited with a few features only, such as 5 forms per account, 100 submissions per month and you have to keep the backlink to 123FormBuilder on your forms. Check out our features matrix for more information.
How many forms can I create?
It depends on the service plan you are on. Higher service plans enable more features, including more web forms for your account. If you need more forms, go to the My Account section of your account and click the upgrade button. To create an unlimited number of forms, either upgrade to the Platinum service plan or higher. Consult our features matrix for more information.
How can I publish my forms?
You can publish your forms in many ways, by using their direct URL or HTML link, embedding them with a JavaScript code, Inline HTML or iFrame, using the Facebook app or the WordPress plugin, using popups, the Blogger code snippet and many more. Once you have created and customized your form, go to the Publish section to complete your work. Read more in our documentation.
How do I change my form design?
You can change the design of your form for more information. in the Themes section, which is located in your form settings. We offer a set of more than 30 predefined form themes for your forms, but you can also create your own from scratch. You can customize the submit button, the logo and more. To apply your own stylesheets, all forms come with a custom CSS editor.

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