123FormBuilder Integration with NationBuilder  

We’re excited to share that 123FormBuilder integrates with NationBuilder, the leading community engagement and leadership platform.   

If you’re organizing a political campaign, managing a nonprofit, or rallying support for a grassroots movement, your tools must work together seamlessly. With this integration, you can connect online forms directly to NationBuilder, capturing real-time volunteer sign-ups, donations, and petition responses.   

One Integration. Endless Campaign Possibilities. 

NationBuilder is built for leaders who need to engage people and drive action. Moreover, with the flexibility and customization of 123FormBuilder’s no-code form designer, you have a powerful solution for growing your supporter base.   

Popular Use Cases 

✅ Political Campaigns  

Create sign-up forms for volunteers and sync them with tags for region, role, or availability. 

✅ Nonprofits 

Use interest forms to update supporter profiles and drive targeted communications. 

✅ Advocacy Groups 

Collect petition signatures and automatically route them to the right lists or organizers. 

Here’s what NationBuilder brings to the table   

✅ Collect Actionable Supporter Data   

Build branded forms for:   

• Volunteer recruitment   

• Petition signatures   

• Contact sign-up   

• Newsletter subscriptions   

• Surveys and feedback   

Sync every form submission directly with your NationBuilder database, automatically updating or creating new supporter profiles.  Then, you can tag and segment them based on custom fields. 

✅ Manage Events with Ease   

Whether you’re hosting a fundraiser, rally, or town hall, 123FormBuilder lets you create customized event forms and sync RSVPs to NationBuilder events in a few clicks.    

✅ Accept Donations Securely   

Use Stripe, PayPal, or Authorize.net to accept donations in your forms. When donors give through your 123FormBuilder form, their contributions are instantly recorded in NationBuilder under their supporter profiles.   

✅ Boost Personalization with Tags and Segments   

Tag users based on how they interacted with your form—for example, “volunteer,” “donor,” or “attended_event”—and build influential email segments in NationBuilder to follow up with the right message at the right time.    

Simple Setup, No Developer Required   

Setting up the integration is quick and user-friendly:   

1. Log into 123FormBuilder.   

2. Choose a form from the gallery or create a new one.   

3. Select the Integrations tab from the top Set Up menu.   

4. Select NationBuilder and connect your account.   

5. Authenticate your NationBuilder account.  You do not need to follow this step if you are already logged into your NationBuilder account.

6. Customize the 123FormBuilder integration with NationBuilder.  
   • Select a list from your nation where you want to add new people. In this case, we choose “Donations“.
   • Select the Email field which represents the NationBuilder Unique Identifier. We recommend you set the field as required for the integration to work correctly.
   • Tick the Update information option to update contacts from your nation if a new entry has been made with an email address that already exists in your nation

7. Map form fields to NationBuilder fields (like name, email, tags). 
   • Associate tags to your form fields. They will appear in the profile details of each new person added to your nation.

Note: You can associate form fields with the Tags field from NationBuilder. This means user input will be transferred as tags in your nation.

7. Save, test, and publish!   
   • From now on, form submissions will add new people to your nation. You can access your contacts in the “People “section of your NationBuilder account.

It’s that easy to streamline your organizing workflow.   

Watch: Step-by-Step Video Tutorial  

Want to see how it works in action? Check out our short video walkthrough below:  

In just a few minutes, you’ll learn how to:  

• Connect your NationBuilder account  

• Map form fields to supporter data  

• Publish your form and start collecting actionable insights  

Ready to take your campaigns further? With 123FormBuilder integration with NationBuilder, you can focus less on admin and more on impact.  

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