Postal Address Append Address, City, State, Zip & more!

DataZapp’s Address Append service helps marketers connect with prospects & customers faster using highly accurate postal data.

Use DataZapp's Reverse Email Append and/or Reverse Phone Append services to reach home owners, residents, & other addressees. Send direct-mail or simply understand the geographic make-up of your contacts.

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Verified Addresses

USPS-deliverable postal addresses processed through CASS/NCOA.

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Multi-Channel Determination

We can derive Addresses from Emails, Phones, Partial Addresses and/or Company info.

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Increase Contact Rates

Boost outreach performance and generate more conversations.

Real Estate Skip Tracing
Address Append Results
71%
Average Match Rate
✔ Match Found
5214 Elm Dr
Houston, TX 75201
Alex Shrier (Home Owner)
Address appends Pricing

Flexible pricing for lists of every size.

From small batches to large volume bulk appends - DataZapp delivers names & addresses with no subscriptions, contracts, or surprise fees. Our pay-as-you-go minimum order is $125 — enough to process about 4,000 records.

Estimate your order cost →
Starting at 3¢ per matched address record.
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No subscriptions

Pull data at your own pace with no contracts or commitments.

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Volume discounts

Pre-pay to unlock better skip tracing rates & avoid the $125 minimum.

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Pay as you go

Only pay for matched records. $125 minimum unless you pre-pay.

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No-obligation quotes

You'll get a quote for each skip trace job. No obligation to purchase.

Beyond Direct Mail

Ideal for Direct Mail, but so much more!

Appending mailing addresses doesn't just unlock postcard and letter campaigns. A complete postal address can improve customer intelligence, support better segmentation, enrich your CRM, and enable more personalized outreach across multiple marketing channels.

Analytics & Segmentation

Understand where your contacts live and segment your audience by city, ZIP Code, county, state, metro area, or region. Create localized campaigns, analyze geographic trends, and tailor offers to each market.

Customer Enrichment & CRM

Complete customer profiles with verified mailing addresses to improve account management, identity resolution, duplicate matching, territory assignments, and future data enrichment such as homeowner insights, demographics, and property information.

Direct Mail Campaigns

Reach contacts who lack mailing addresses with postcards, catalogs, fundraising appeals, renewal notices, promotions, and other high-performing direct mail campaigns. Postal append helps turn incomplete records into marketable prospects.

👋 Get In Touch

We're here to help!

Have questions about our data, pricing, or custom solutions? Drop us a line. Our team typically responds within an hour during business hours.

Sales

Support

Email Support

Our Headquarters

555 W Granada Blvd. Suite G6,
Ormond Beach, FL 32174

Business Hours

9 AM EST to 6 PM EST

Request InfoX

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Real-Time Address Append API

Automate with API Integration

DataZapp’s Address Append API lets developers enrich records programmatically with available name, address, city, state, & zip code. Use it to complete lead records inside your CRM, intake form, data platform, marketing workflow, or customer database.

Name & Address Returned First + Last with full mailing address
Phone-match filtering option Request only records where a corresponding phone number is available.
Match-level response data Responses include match status, token, count, and processed time.
Built for automation Connect Postal Append to lead capture, CRM enrichment, onboarding, or data hygiene workflows.
{
  "AppendModule": "EncryptedEmailAppendAPI",
  "AppendType": 5,
  "Data": [
    {
      "FirstName": "John",
      "LastName": "Doe",
      "Address": "123 Main St",
      "City": "Anytown",
      "Zip": "12345"
    }
  ]
}
View API Documentation API access requires an API key. Contact DataZapp to get started.

Check out our other Services!

Check out our other Services!

Email Append Service

Add Email addresses to your contacts.

Demographic Append Service

Add Demographic & Behavioral data points to your contacts.

Reverse Phone Append Service

Add Names, Address, even Emails to your Phone records.

Phone Scrub Service

Flag or Remove Do-Not-Contact & other undesirable phone numbers.