REVERSE EMAIL APPEND SERVICE

Scalable Identity Resolution Services: Resolve Email & HEM Lists into Complete Profiles

reverseappends mail 1

Use Datazapp’s Reverse Email Append service to:

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.

How Reverse Email Append Works

Affordable & Accurate Data Appends – Just 3 Cents Per Match!

Append your email lists with names, addresses, and phone numbers.

DataZapp makes it fast, easy, and cost-effective—just 3 cents per match!

Accurate & Up-to-Date Data

Only the most relevant postal information is provided for each email.

Save Time & Money

Get high-quality data at a fraction of the cost.

Instant Access

Our 24/7 self-service platform delivers results in real time.

Bulk Discounts Available!

Get even lower rates with our prepaid plans.

EMAIL DATA ENRICHMENT SERVICE

Upload Emails,
SHA, or MD5 Hashes

Reverse Email Process Graphic

John Smith
[email protected]
(602) 502-4578

123 Blue St. Phoenix, AZ
Company Name & SIC
(if available)

Upload your email list or HEM list to enrich it with associated name, mailing addresses and phone numbers. For added security, you can also upload hashed SHA256 or MD5 email strings instead of plain email addresses.

DataZapp processes hashed email lists (HEMs) to retrieve their associated email addresses, along with key details like name, mailing address, city, state, ZIP code, and phone number.  Get accurate, up-to-date data while keeping your information secure!

EMAIL Demographic Append: Transform Emails into Comprehensive Consumer Profiles
Enhance your email database with Consumer Data Enrichment that goes beyond simple contact info. Our Bulk Demographic Append services resolve individual email addresses into complete household profiles, providing the “Signals of Readiness” needed for high-conversion marketing. By appending over 500+ verified attributes, you can segment your audience with surgical precision to maximize your ROI.


Key Data Points for Targeted Demand Generation:

  • AI-Powered INTENT: Roofing, Solar, Home Sell Score,  Political Party Leaning, Accredited Investor

      • Household Composition: Age, Gender, Marital Status, and Presence of Children, Income, Net worth.

  • Property Insights: Home Ownership Status, Estimated Home Value, and Length of Residence.

  • Consumer Behavior: Ethnicity, Education, Donor Affinity, and Interest-Based Segments.

Common Use Cases for Reverse Email Append

Re-Connection

Reach inbound leads from incomplete forms

Multi-Channels

Reach your Customers via multiple channels

Validation

Validate User Identity for Fraud Prevention or Support

Personalization

Personlize your outreach messages

Enrichment

Fill-in your Data Gaps & complete your customer profiles

The Datazapp Advantage

Simple. Fast. Reliable.

Real-Time Integration

Our service is accessible via real-time API/Web Services, ensuring seamless data integration tailored to your needs.

Why Choose Datazapp?

< 5 Minutes

Turn-Around Time

25-60%

Avg Match Rate

290 Million

Mailing Addresses (Updated 2026)

Only Pay

for matches

API Integration

Automate Phone
Appends via API

Ready to elevate your marketing and outreach? Let Datazapp’s Email Append Service do the heavy lifting for you.

REVERSE EMAIL APPEND SERVICE FAQ'S

What is Reverse Email Appending?

Reverse email append service, you can enrich your email list by adding mailing addresses and phone numbers for just 3 cents per match. Email addresses represents person's digital identity, and reverse email appends can expand your contact options.

Why Reverse Append Emails?

Obtaining postal and phone info for Email lists expands the marketing channels available to marketers. Marketers and e-commerce site owners can use reverse email to expand their marketing options or verifying registrations to reduce risk and fraud.

What are the Various Kinds of Email Append Services?

Besides Reverse Email Appending, Datazapp also offer standard Email append for both Consumer and Business Email addresses. This service takes lists of postal information (Names & Addresses) and returns associated Email addresses.

How Accurate Is the Appended Data?

The accuracy of postal data matched to email addresses ranges from 75% to 87%. Hashed emails or HEMs are securely converted back to plain text with 100% accuracy—no data is lost in the process.

What is the Turnaround Time for Reverse Email Appends?

Most appends submitted on our 24/7 online platform turn-around in under 5 or 10 minutes.

Can I View the Match Results before Purchasing?

Yes, you will receive a no-obligation match analysis for every list uploaded. Create an account at www.Datazapp.com and upload your file to view a detailed match report.

How do I Get Started?

It's easy to Join:

Upload your list & get a match report instantly. Buy lists as desired with built-in scalability.

Price Calculator

To estimate order costs, click our interactive price calculator.

Check out our other Services!

Phone Append Service

Add mobile cell numbers or landlines to your contacts.

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.