
Use Datazapp’s Reverse Email Append service to:
Append your email lists with names, addresses, and phone numbers.
Only the most relevant postal information is provided for each email.
Get high-quality data at a fraction of the cost.
Our 24/7 self-service platform delivers results in real time.
Get even lower rates with our prepaid plans.
Upload Emails,
SHA, or MD5 Hashes

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!
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.
Reach inbound leads from incomplete forms
Reach your Customers via multiple channels
Validate User Identity for Fraud Prevention or Support
Personlize your outreach messages
Fill-in your Data Gaps & complete your customer profiles
Simple. Fast. Reliable.
Our service is accessible via real-time API/Web Services, ensuring seamless data integration tailored to your needs.
Turn-Around Time
Avg Match Rate
Mailing Addresses (Updated 2026)
for matches
Automate Phone
Appends via API
Pay-as-you-go plans start at just $0.03 per match. Upgrade to pre-pay pricing for even greater savings!
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.
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.
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.
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.
Most appends submitted on our 24/7 online platform turn-around in under 5 or 10 minutes.
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.
Upload your list & get a match report instantly. Buy lists as desired with built-in scalability.
To estimate order costs, click our interactive price calculator.
Add mobile cell numbers or landlines to your contacts.
Add Email addresses to your contacts.
Add Demographic & Behavioral data points to your contacts.
Add Names, Address, even Emails to your Phone records.











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