Skip to main content
Accurate Append

Accurate Append

Email validation and data appends that sync straight to your nation

Our popular NationBuilder app has billions of data points on U.S. voters and consumers to bring your contact lists to life and help you raise more money and win more votes. Instant signup and results are pushed directly into your Nation.


Pennies per record. Register for a free estimate or contact us directly if you have 50,000 or more records.


About the app

  • We'll show you which emails are causing you spam trouble.
  • Add new email addresses and phone numbers to fill holes in your data and help you reach more prospects and voters.
  • Improve your Facebook ad buying ROI with the data you need for laser-targeted custom audiences.
  • Save time and money by verifying that your list members have the correct phone and postal contact info.
  • Services for U.S. and Canadian campaigns and nonprofits.
  • Results automatically uploaded to your nation and also available as a separate .csv download so they can be used outside of NationBuilder.
  • Manage multiple nations from a single account.
Get integration