Common Account Detection API by Email - Detect Duplicate Users & Fake Accounts
Our Common Account Detection by Email API helps platforms identify duplicate, fake, or suspicious user accounts linked to a single email address. This API is essential for platforms dealing with fake signups, referral abuse, spam accounts, and bot activity, especially in social media apps, e-commerce platforms, gaming apps, and online communities.
Email Sentry
Synthetic Identity APIIntelligence Report
Reputation
BLACKLISTED
"email": "test.user@temp-mail.io",
"is_disposable": true,
"mx_records": "valid",
"linked_profiles": [
"ID_9901", "ID_9902", "ID_9903"
],
"fraud_risk": "CRITICAL"
Smart Duplicate Detection
Identify fake accounts instantly. Detect multi-accounting and fraud with our advanced Email ID Intelligence API.
1. Input Email
Submit a user's email address during registration or checkout for real-time risk assessment.
2. Cross-Analysis
Our engine scans for duplicates, disposable domains, and historical fraud signals across our global network.
3. Fraud Verdict
Receive an instant risk score to approve, flag, or block fake users and duplicate profiles.
Protecting Social & E-commerce
Stop promo abuse and fake reviews with a robust identity layer designed to catch sophisticated fraud patterns at the gate.
Stop Multi-Accounting
Identify users creating multiple accounts using variations of the same email to exploit systems.
Disposable Email Blocking
Instantly flag 10-minute mail and temporary inboxes often used for spam and bot registrations.
Prevent Promo Abuse
Ensure coupons and first-time offers reach genuine new customers instead of serial bonus hunters.
Social Graph Reputation
Check if an email is linked to known social profiles to verify the digital footprint of the user.
Seamless API Integration
Connect your registration flow to our REST API in minutes with comprehensive documentation.
Real-time Risk Scoring
Get sub-second responses with detailed breakdowns of why an account was flagged as high-risk.
Global Blacklist Database
Cross-reference emails against a massive database of known bad actors and fraudulent domains.
GDPR & Privacy Compliant
Securely process data with full adherence to international data protection and privacy laws.
Customizable Thresholds
Adjust sensitivity settings to match your platform’s specific risk tolerance and user experience goals.
Advanced Detection Capabilities
Our Common Account Detection API goes beyond simple validation, utilizing deep heuristics to uncover hidden fraudulent relationships.
Alias & Pattern Matching
Detect "plus-addressing" and "dot-variants" used by scammers to create hundreds of accounts from a single Gmail inbox.
Domain Reputation
Analyze the host domain to determine if it's a reputable provider or a private server configured for bot farm operations.
Behavioral Intelligence
Leverage cross-platform data to see if an email has been flagged for fraudulent activity elsewhere in the ecosystem.
Where Can You Use Email Detection API?
Identifying fake accounts is critical for digital trust. Our API powers fraud prevention and identity intelligence for high-growth e-commerce and social platforms.
Integrate Email Fraud API in Minutes
Analyze account risk with millisecond latency. Fully documented SDKs for Node.js, PHP, Python, and Java.
curl --request POST \
--url https://api.idspay.in/v3/email/verify \
--header 'Authorization: Bearer YOUR_API_KEY' \
--header 'Content-Type: application/json' \
--data '{
"email": "user.name+extra@gmail.com",
"check_duplicates": true,
"ip_address": "1.1.1.1"
}'{
"status": "SUCCESS",
"data": {
"risk_score": 85,
"is_disposable": false,
"is_duplicate": true,
"primary_email": "username@gmail.com",
"recommendation": "FLAG",
"fraud_network": true
}
}🔐 Key Features of Email Detection API
Protect your ecosystem with advanced email heuristics and fraud intelligence infrastructure built for global scale.
Instant Duplicate Match
Real-time identification of sub-addressing and email alias variations across providers.
Disposable Detection
Automated blocking of thousands of temporary and burner email domain providers.
Deep Risk Analysis
Granular JSON responses detailing account age, domain health, and fraud signals.
Fraud Intelligence SDK
Rich developer documentation to implement advanced fraud gates in under 10 minutes.
Secure API Auth
Industry-standard encryption protecting sensitive identity data during analysis.
Massive Scalability
High-performance engine built to verify millions of sign-ups during traffic surges.
Enterprise-Grade Uptime
99.99% availability ensures your fraud monitoring never misses a malicious event.
Multi-Source Verification
Cross-references emails against global reputation databases for maximum accuracy.
How Email Check API Works
Identify disposable, duplicate, and high-risk accounts in real-time through our advanced heuristic intelligence.
Submit Email
Send the user's email address and IP to our endpoint via a secure HTTPS request.
Heuristic Scan
Our system strips sub-addressing (tags) and analyzes domain reputation instantly.
Risk Scoring
The API assigns a fraud score based on disposable status and known malicious patterns.
JSON Insight
Receive a clean response with duplicate detection and pass/fail recommendations.
Prevent Multi-Accounting with Email Fraud API
Our Email Check API is engineered to help platforms instantly identify if a user is trying to bypass limits using email aliases or disposable domains. We normalize addresses to their primary form to stop promo abuse at the source.
To protect marketing budgets and ensure high-quality user growth, businesses require a real-time fraud detection layer. Our solution provides deep domain insights and automated risk signaling for fintech, e-commerce, and gaming.
Whether you are preventing bot registrations, blocking temporary burners, or linking multiple accounts to a single actor, this Intelligence Gateway delivers unmatched accuracy and sub-millisecond performance.
Fraud Detection Accuracy
Latency
Disposable
Why IDSPay is Better than Other Fake Account Detection APIs?
See how we outperform the industry standards.
Faster Response
Lower latency and faster data retrieval than competitors.
Superior Uptime
More reliable service stability than Eko & API Mall.
Cleaner Docs
Easier to read and implement compared to Digitap.
Affordable Pricing
Cost-effective plans tailored for growing startups.
Dedicated Support
Real human experts ready to help you with any integration hurdles 24/7.
Why We Are The Better Choice
Compare our performance and see why top fintechs trust our infrastructure.
| Feature | 🚀 Our API | Other Providers |
|---|---|---|
| Accuracy |
99.9% (Govt. Direct)
|
~85-90% (Scraped)
|
| Speed |
< 500ms
|
2 - 5 Seconds
|
| Pricing |
Pay-per-use (No Fixed Fee)
|
High Monthly Commitment
|
| Support |
24/7 Priority Support
|
Email-only (48hr TAT)
|
* Based on internal benchmark tests and competitor analysis (April 2026).
Frequently Asked Questions
Common developer queries about integrating the Email Fraud & Verification API.
1. What is the Email Check API?
The Email Check API is a security tool that allows platforms to verify if an email address is valid, identifies if it belongs to a disposable/temporary service, and detects "sub-addressing" aliases used to create duplicate accounts.
2. How does it detect duplicate accounts (Multi-accounting)?
Our API uses normalization logic. It strips tags (e.g., transforming "user+promo@gmail.com" to "user@gmail.com") and handles provider-specific rules like Gmail's dot-insensitivity to ensure a single identity per user.
3. Can it identify "Burner" or Disposable emails?
Yes, our engine maintains a real-time database of over 120,000 disposable email providers (like Mailinator or TempMail) and flags them instantly to prevent bot registrations and trial abuse.
4. What is the typical response time?
The API is built for high-concurrency environments, typically returning a full heuristic and reputation analysis in under 150ms, ensuring no friction during user signup.
5. Does the API provide a fraud score?
Yes. Each response includes a risk score based on domain age, server configuration (MX records), and historical malicious activity associated with the email pattern.
6. Is it compliant with data protection laws?
Absolutely. We process data in accordance with GDPR and CCPA. We analyze the structure and reputation of the data without storing personally identifiable information (PII) beyond the session.
7. Which programming languages are supported?
Our REST API is language-agnostic. We provide SDKs and code snippets for Node.js, Python, PHP, Go, Ruby, and Java for seamless integration.
8. Does it check if the email actually exists (SMTP check)?
Yes, our API performs a "deep ping" or SMTP handshake to verify mailbox existence without sending an actual email, reducing your bounce rates effectively.
9. Can I process bulk lists for database cleaning?
Yes, the API supports batch processing, allowing you to upload and verify thousands of records to scrub your CRM of inactive or fraudulent leads.
10. How do I get started with a trial?
Simply sign up for a developer account to receive your API key. We provide complimentary credits to test our sandbox and live environments.