Reverse Email AppendAPI
Append contact details from an email address using Datazapp intelligence. Quality-focused matching with clear confidence indicators.
Identity Data
Enrichment Type
10 tokens
Per Request
Confidence
Included
Complete Email Intelligence Platform
Identity enrichment from email with confidence scoring
Identity Enrichment
Turn an email address into full contact details with name, address, and supporting signals. Build complete customer profiles.
Quality & Confidence
Match confidence indicators help you decide when to auto-accept or queue for review. Transparent quality scoring.
Datazapp Intelligence
Uses Datazapp email intelligence to maximize match coverage across consumer datasets with regular updates.
Deliverability Context
Pair with email validation to keep enriched contacts deliverable and campaigns healthy. Complete email intelligence.
Reverse Email Append Use Cases
Real businesses leveraging email intelligence
Lead Completion
Backfill missing contact info for signups captured with email-only forms. Complete your lead profiles.
- Profile completion
- Form enrichment
- Lead quality boost
- Better segmentation
Account Intelligence
Enrich users for personalization, fraud checks, and higher-value segmentation. Know your customers better.
- Personalization data
- Fraud signals
- Segmentation boost
- Customer insights
Customer 360
Add addresses and identity context to unify records across systems. Build complete customer views.
- Record unification
- Cross-system sync
- Complete profiles
- Identity resolution
CRM Enrichment
Fill gaps in customer databases with verified contact details. Keep your CRM accurate and actionable.
- Database completion
- Contact accuracy
- Actionable data
- Team alignment
Industries Using Reverse Email Append
Trusted across sectors for email intelligence
Why Choose 1Lookup Reverse Email Append?
Quality-focused with transparent pricing
Consumer Database Coverage
Datazapp email intelligence with billions of consumer records
Confidence Scoring
Every match includes quality indicators for trust decisions
Identity Resolution
Name and address enrichment from email alone
Success-Based Billing
Only charged when contact data is found
Simple Reverse Email Append Integration
Email intelligence with a single API call
// Reverse email append
const response = await fetch('https://api.1lookup.io/api/v1/reverse-email-append', {
method: 'POST',
headers: {
'Authorization': 'Bearer YOUR_API_KEY',
'Content-Type': 'application/json'
},
body: JSON.stringify({
email: 'customer@example.com'
})
})
// Response
{
"success": true,
"email": "customer@example.com",
"contact": {
"name": "Jane Smith",
"address": "123 Main Street",
"city": "Austin",
"state": "TX",
"zip": "78701"
},
"confidence": 0.78,
"tokens_used": 10
}Reverse Email Append API FAQ
Common questions about our email intelligence service
The API returns name, mailing address, phone number (when available), and confidence scores from our consumer database. Match quality varies based on email presence in our data sources.
Match rates typically range from 25-45% depending on the email domain type and consumer database coverage. Each response includes confidence indicators to help you assess quality.
Business emails may have lower match rates in consumer databases. For B2B enrichment, consider pairing with domain intelligence or dedicated B2B data services.
Reverse email append costs 10 tokens per request. You are only charged for successful requests where contact data is found.
Technical Specifications
Token Cost
10 tokens
Data Source
Datazapp
Match Rate
25-45%
Input
Confidence
Included
Response
Real-time
Start Enriching Emails Today
Get contact data and confidence scores from any email address
100 free credits • Setup in 5 minutes • Premium support