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Email Validation Services

Data Verification & Deliverability

Protect your sender reputation with our email verification and email validation tools. We validate email addresses in real-time using a proprietary multi-step verification process that goes well beyond standard SMTP pinging to guarantee 99.5% deliverability. Enterprise-grade verification starting at just $0.002 per record.
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99.5% Accuracy | Real-Time Verification | GDPR & CCPA Compliant
4B

Mobile Advertising IDs (MAIDs)

700M

Verified Phone Records

1B

Opt-in Consumer Emails

Trusted by:

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The image shows the Ford logo, featuring the word Ford in white script inside a dark oval with a white border.
Black Chevrolet logo featuring a bowtie shape above the word Chevrolet in bold uppercase letters, both on a light background.
The Girl Scouts logo features the words girl scouts in bold black lowercase letters next to a solid gray trefoil symbol.
State Farm logo with three interlocking ovals on the left and bold black "State Farm" text on the right, set against a light gray background, representing trusted customer data services.
United Way logo with the words united way next to an image of a hand holding a human figure inside a rainbow-like circle.

Our PROVEN TRACK RECORD

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Deliverability Rate guaranteed after our validation process.
0 %
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Unbeatable, transparent pricing for bulk and real-time validation.
$ 0
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Verified records updated daily in our master database.
0 M+
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< 1ms

Ultra-low latency for our real-time API integration.

Stop Losing Revenue to Hard Bounces and High-Risk Data

Sending emails to invalid or “toxic” addresses is the fastest way to destroy your domain reputation. High bounce rates trigger spam filters at major ISPs, causing your marketing messages to land in the spam folder—or not be delivered at all.
The Solution: The Data Group provides a high-performance bounce email validation and bulk email verification engine designed for large-scale enterprises. We go beyond simple syntax checks to perform a forensic analysis of every address, ensuring your marketing dollars reach real people, not dead-end inboxes.
Free trial data test
A table with three columns—Client Name, Phone Number, and Status—displays customer data services: John W.: +13654875; Margo R.: +19865489, validated; Will D.: +25654589, added.

Our 3-Step Process: Beyond Standard Verification

Most providers just “match and dump” data. We don’t. While competitors rely on basic SMTP checks (which often return up to 40% invalid emails), our proprietary engine digs deeper.

Step 1

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Identity Matching

We match your input file against our master database of 1+ Billion consumer records using fuzzy logic to handle misspellings. This ensures we identify the right individual.

Step 2

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Proprietary Verification (Beyond SMTP) The Critical Difference.

We go beyond the standard “SMTP handshake” used by most vendors. Our proprietary validation process analyzes multiple data signals to verify the inbox is truly active and safe. This allows us to filter out threats that standard checks miss.

Step 3

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The Append & Delivery

You receive a clean, enriched file ready for use. We guarantee that 99.5% of the appended emails are valid and deliverable addresses.

What Makes Our Data Better?

Our team of experts leverages cutting-edge technology and extensive industry experience to provide comprehensive data solutions tailored to your business needs. We manage over 500 million Mobile Ad IDs and 1 billion privacy-compliant emails, ensuring your data is robust and reliable.

100%

Free data test

Try our data services risk-free with a complimentary data quality test before committing.

24/7

Personalized support
Frustrated by AI bots? Receive a real dedicated support person.

$0.02

For one record

Affordable data enhancement at just $0.02 per record, maximizing your marketing ROI.

The team at The Data Group always provides us with great data and great customer service.

National Ford Dealer

We have worked with The Data Group for over 15 years and they are our go to for high-quality data.

Marketing Agency

90%

Match rates

Trust our services to deliver up to 90% match rates, guaranteeing highly accurate customer data.

Proprietary Multi-Step Verification: Beyond Standard SMTP Pinging

We don’t just “guess” if an email is valid. Our email validation software performs a multi-layer verification process to ensure absolute precision:
  • Syntax & Domain Audit: We identify malformed strings, typos, and inactive/expired domains.
  • Advanced Verification Engine: While we utilize pinging email addresses as part of our logic, our engine performs deep, multi-layer mailbox-level handshakes to confirm activity without ever sending an email. This proprietary approach captures invalid emails that standard pings often miss.
  • Comprehensive Result Codes: Unlike basic tools, we return detailed status codes for every record: Deliverable, Invalid, Catch-All (Accept-All), Disposable, and Abuse/Spam Trap.
A table with three columns—Client Name, Phone Number, and Status—displays customer data services: John W.: +13654875; Margo R.: +19865489, validated; Will D.: +25654589, added.

How Accurate Are Email Validation Services?

Organizations often ask: How accurate are email validation services when dealing with complex “Catch-All” servers? At The Data Group, we provide an industry-leading 99.5% deliverability guarantee by achieving the smallest catch-all rate on the market. By removing the “noise” from your lists, our email bounce service typically increases open rates by up to 30% and significantly lowers your cost-per-lead.
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Transparent Pricing: Performance-Driven Results

We offer the most competitive rates in the market because we are a direct data provider.
  • Email list cleaning (Batch): $0.002 per record (No setup fees).
  • Email checker api: Real-time verification for sign-up forms and lead-gen pages.
  • Enterprise Bulk Email Verification: Custom pricing for files exceeding 1 million records.
Expert Data Infrastructure. As a premier U.S. data provider, The Data Group serves enterprises with the dedicated support and high-speed infrastructure required to power large-scale marketing campaigns.
Industries

What Sectors We Serve

Nonprofits

01

We support charities, associations and membership organisations with data enrichment that increases deliverability, reduces waste and heightens engagement.

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Flexible ecosystem
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All-in-one CRM
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Live donor profiles
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Time-saving automation

Retail

02

From bricks-and-mortar chains to digital marketplaces, retail and eCommerce businesses rely on accurate contact, purchase-behaviour and demographic data to engage shoppers, optimise lifetime value, and maximise ROI on campaigns.

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Omnichannel identity linkage
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Real-time shopper insights
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Predictive buyer personas
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ROI-driven segmentation

Healthcare

03

In a regulated and data-sensitive environment, accuracy, compliance and engagement matter. We assist healthcare-providers, medical-device firms and pharmaceutical marketers in cleaning and enhancing patient, provider and HCP data for improved outreach, segmentation and campaign performance.

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Compliance-first architecture
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Verified HCP signals
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Fragmented Patient Data Linkage
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Time-saving automation

We support charities, associations and membership organisations with data enrichment that increases deliverability, reduces waste and heightens engagement.

A blue checkmark icon on a light gray background, symbolizing confirmation or approval.

Flexible ecosystem

A blue checkmark icon on a light gray background, symbolizing confirmation or approval.

All-in-one CRM

A blue checkmark icon on a light gray background, symbolizing confirmation or approval.

Live donor profiles

A blue checkmark icon on a light gray background, symbolizing confirmation or approval.

Time-saving automation

From bricks-and-mortar chains to digital marketplaces, retail and eCommerce businesses rely on accurate contact, purchase-behaviour and demographic data to engage shoppers, optimise lifetime value, and maximise ROI on campaigns.

A blue checkmark icon on a light gray background, symbolizing confirmation or approval.

Flexible ecosystem

A blue checkmark icon on a light gray background, symbolizing confirmation or approval.

All-in-one CRM

A blue checkmark icon on a light gray background, symbolizing confirmation or approval.

Live donor profiles

A blue checkmark icon on a light gray background, symbolizing confirmation or approval.

Time-saving automation

In a regulated and data-sensitive environment, accuracy, compliance and engagement matter. We assist healthcare-providers, medical-device firms and pharmaceutical marketers in cleaning and enhancing patient, provider and HCP data for improved outreach, segmentation and campaign performance.

A blue checkmark icon on a light gray background, symbolizing confirmation or approval.

Flexible ecosystem

A blue checkmark icon on a light gray background, symbolizing confirmation or approval.

All-in-one CRM

A blue checkmark icon on a light gray background, symbolizing confirmation or approval.

Live donor profiles

A blue checkmark icon on a light gray background, symbolizing confirmation or approval.

Time-saving automation

The Blog

Industry Articles and News

What Sets a #1 Ranked Caller ID API Apart? Key Features to Look For
How Anonymous Website Visitors Can Become Leads
Why You Should Update Your Contact Lists and How Phone Append Helps
Why Your Organization Should Use an Email Append Service
Using Data Append to Improve Marketing Engagement
What is First, Second, and Third Party Data?
What Sets a #1 Ranked Caller ID API Apart? Key Features to Look For
How Anonymous Website Visitors Can Become Leads
Why You Should Update Your Contact Lists and How Phone Append Helps
The Blog

Industry Articles and News

What Sets a #1 Ranked Caller ID API Apart? Key Features to Look For
How Anonymous Website Visitors Can Become Leads
Why You Should Update Your Contact Lists and How Phone Append Helps
Why Your Organization Should Use an Email Append Service
Using Data Append to Improve Marketing Engagement
What is First, Second, and Third Party Data?
Services

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how reverse email appending can expand your customer reach and boost results

Reverse Email Append

email validation services

Email Verification

FAQs

Email Validation FAQs

Q: What is the benefit of using an email bounce service or bulk email checker?
A: It protects your sender reputation. High bounce rates can get you blacklisted; validation ensures your emails actually hit the inbox.
A: We guarantee 99.5% deliverability. Our proprietary verification process goes well beyond standard SMTP pinging to ensure mailbox-level accuracy along with the industry’s lowest catch-all rates.
A: No. Email validation checks if an existing email is valid. A reverse email append uses an email address to find the associated name and postal address.
A: It is a technical check where our server “pings” the recipient’s server to see if the mailbox is ready to receive mail without sending a message. Our system enhances this with additional proprietary checks for maximum accuracy.

A: Yes. Our advanced detection identifies “honeypot” addresses that ISPs use to catch spammers, protecting your domain from permanent damage.

A: Our API is built for developers. We provide full documentation for easy integration into your existing website, CRM, or app.

A: Absolutely. We offer a free match test for all new clients so you can experience our accuracy firsthand.

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Services

Data Append

Demographic Append

Email Append

Email Validation

Phone Append

Psychographic Append

Reverse Email Append

Reverse Phone Append

Programmatic

Anonymous Digital Retargeting

Audience Data

Enhanced Data Onboarding

Custom Mailing

Mailing Lists

API

Auto Append API

Demographic Append API

Email Append API

Email Validation API

Phone Append API

Reverse Email Append API

Reverse Phone Append API

Pricing

Contact Us

What Sets a #1 Ranked Caller ID API Apart? Key Features to Look For
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Logo for The Data Group with THE in white text on a blue vertical background and DataGroup in bold black and gray text on a white background.
Free Trial
Services

Data Append

Email Append

Reverse Email Append

Email Validation

Phone Append

Reverse Phone Append

Demographic Append

Psychographic Append

Programmatic

Audience Data

Anonymous Digital Retargeting

Enhanced Data Onboarding

Custom Mailing

Mailing Lists

API

Pricing

Contact Us

What Sets a #1 Ranked Caller ID API Apart? Key Features to Look For
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