Email Append Service

Append verified email addresses for as little as 3 cents each.

Upload your mailing list and append matching email addresses for as little as $0.03 per match. DataZapp’s self-service platform makes it easy to enrich your data, review match results, and download your completed file quickly.

Premium Email Database A multi-source email database, regularly updated and optimized for better campaign performance.
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Verified Email Matching DataZapp’s deep-match algorithm finds the best email address and removes hard bounces at download for better deliverability.
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Flexible Pricing Choose pay-as-you-go pricing at $0.03 per email match or a prepaid plan based on volume for additional savings!
API
Real-Time API Available Integrate via API for real-time Email records to your application.

Bulk Volume Pricing

The Bigger Your List, the Lower Your Price

List VolumePrice Per Appended EmailCPM (Emails)
Up to 50,000 Records$0.03$30.00 per 1,000
50,000 – 100,000 Records$0.025$25.00 per 1,000
100,000 – 250,000 Records$0.02$20.00 per 1,000

Request InfoX

  • By providing a phone number, we may contact you via SMS text message to better assist you. You can reply STOP to opt out of further messaging. Message and data rates may apply.

See how many E-mails we can add to your list:

Every list is different. Here are real match examples from DataZapp customers — actual Email match rates across different list sizes.
Email match
Input records
Match %
Email match rate
Appended
Estimated
Cost
$1,000
Pre-pay
$2,000
Pre-pay
DataZapp’s Email Append Service helps businesses connect with customers faster by matching reliable email data from trusted multi-source databases. We can also identify and add property owner names to address-only files using authoritative public property and homeowner data sources, then append matching Emails to those records. This makes it easy to transform mailing lists, customer records, and address-only data into actionable marketing audiences

From Prospect to Customer — Email Append at Every Stage

Add verified Emails to the records you already have so your team can reach more people, reactivate old lists, improve follow-up, and build stronger custom audiences.
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Multi-Channel Campaign Expansion

Connecting via mailers & phone calls may not be enough. Email is a fantastic channel for steady, on-going communication.

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Digital Audience & Ad Matching

Digital, paid ad campaign across Meta, LinkedIn, and Google Ads need data-points to match your contact records to ad profiles. Email append is a common & robust way to ensure maximum coverage.

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Retention & Win-Back Marketing

Email append ensures your lapsed, aged, or incomplete customer profiles don't go to waste. It gives you a direct, cost-effective way to get those contacts back into your funnel.

Real-Time Inbound Optimization

Many companies integrate our Email Append API into their lead capture forms. That way, a partial form fill with a name, address, or phone can also have that valuable Email address.

Maximize Your Custom Audience Match Rate on Meta, Google & More

Adding Email addresses can significantly improve your audience match rates across digital advertising platforms.

30–50% Typical baseline audience match rate
60–80%+ Potential match rate with appended email data
Minutes To append verified personal & business emails

Give platforms like Meta, Google Customer Match, TikTok, and Snapchat a second — often stronger — matching signal. More matched records mean larger retargeting audiences, higher-fidelity lookalike seeds, and a significantly lower cost-per-acquisition across paid channels.

Start Appending Emails Upload your list, preview matches, and download appended results.
Real-Time Email Append API

Automate with API Integration

DataZapp’s Email Append API lets developers enrich records programmatically with available Emails. Use it to complete lead records inside your CRM, intake form, data platform, marketing workflow, or customer database.

Individual, household, or both Choose the email append type that fits your campaign or application.
Secondary name input Optionally include alternate first & last name to enhance match rate
Match-level response data Responses include match status, token, count, and processed time.
Built for automation Connect Email Append to lead capture, CRM enrichment, onboarding, or data hygiene workflows.
{
  "ApiKey": "API_KEY",
  "AppendModule": "EmailAppend",
  "AppendType": 3,
  "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.

HOW TO APPEND EMAIL ADDRESSES:

See how to add Emails to your postal records.

HOW TO REVERSE APPEND EMAILS:

See how to add postal data to your Email records.

Check out our other Services!

Phone Append Service

Add mobile cell numbers or landlines 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.

Email Append Customer Rating:
4.9 (321 ratings · 84 reviews)