EmailRep

Overview

EmailRep offers an API and browser extension designed to provide reputation analysis for email addresses. The service aggregates various data points to generate a risk assessment, which can be utilized in applications requiring user verification, fraud detection, or threat intelligence enrichment. The core functionality revolves around a single API endpoint that accepts an email address and returns a JSON object containing reputation data.

Developers integrate EmailRep to perform real-time checks on email addresses during account creation, transaction processing, or data ingestion. The system assesses factors such as whether an email address has appeared in known data breaches, its associated domain's age, whether it's a disposable email service, and its activity on various online platforms. This aggregated information contributes to a reputation score, indicating the likelihood of an email address being associated with fraudulent or suspicious activity. For instance, an email address registered with a disposable domain or one frequently linked to reported spam could receive a higher risk score. The API is primarily focused on providing this lookup service, making its implementation straightforward for developers seeking to add an email verification layer to their systems.

Technical buyers and security teams leverage EmailRep to enhance their existing fraud prevention systems. By integrating email reputation data, organizations can add an additional layer of scrutiny to user accounts, potentially reducing instances of account takeover, fake registrations, and payment fraud. The service is particularly suited for scenarios where a quick, programmatic assessment of an email's trustworthiness is required without extensive manual investigation. Its application extends to customer relationship management (CRM) systems for lead qualification, e-commerce platforms for transaction screening, and cybersecurity tools for enriching incident response data. The developer experience is noted for its clarity, with documentation providing basic usage examples for direct API calls, supporting manual integration into various software environments.

Key features

• Email Reputation Scoring: Provides a numerical score indicating the risk level associated with an email address, derived from various data points.
• Breach Data Integration: Identifies if an email address has been compromised in known data breaches, enhancing risk assessment.
• Disposable Email Detection: Flags email addresses from temporary or disposable email services often used for spam or fraudulent sign-ups.
• Domain Analysis: Gathers information about the email's domain, including its age, registrar, and associated reputation.
• Social Media Presence: Indicates if the email address is publicly associated with profiles on major social media platforms.
• Abuse Reporting History: Incorporates data on whether an email address has been reported for spamming or other abusive behaviors.
• API Access: Offers a RESTful API for programmatic integration into applications and services, enabling automated checks.
• Browser Extension: Provides a browser-based tool for manual, on-demand lookup of email reputations.

Pricing

EmailRep offers a free tier and several paid plans scaled by request volume. As of May 2026, the pricing structure is as follows:

For detailed and up-to-date pricing information, refer to the EmailRep pricing page.

Common integrations

EmailRep's API is designed for direct integration into various systems that require email verification and fraud prevention. Common integration points include:

• Customer Relationship Management (CRM) Systems: To validate lead emails during acquisition or update existing customer records.
• E-commerce Platforms: For real-time fraud checks during checkout or account registration.
• User Authentication Systems: To add an extra layer of security during user sign-up or login, helping to prevent bot accounts. For example, integrating with Firebase Authentication to verify email legitimacy.
• Cybersecurity Tools: To enrich threat intelligence platforms and incident response workflows with email reputation data.
• Marketing Automation Platforms: To clean email lists and improve deliverability by removing high-risk or invalid addresses.
• Internal Business Applications: For validating emails submitted through forms or used in internal workflows.

Alternatives

Organizations seeking email verification and reputation services may consider several alternatives:

• Hunter.io: Primarily known for its email finder and verifier tools, also offers domain search capabilities.
• ZeroBounce: Provides email validation, scoring, and deliverability tools, focusing on accuracy and bulk processing.
• NeverBounce: Specializes in real-time email verification and list cleaning to reduce bounce rates.
• SparkPost: While primarily an email sending service, SparkPost also offers email validation features to enhance deliverability.

Getting started

To begin using the EmailRep API, you typically need an API key, which can be obtained after signing up on their website. The primary interaction is a GET request to the /v1/email/{email} endpoint. Below is a basic example using cURL and Python to query the reputation of an email address.

cURL Example

Replace YOUR_API_KEY with your actual API key and [email protected] with the email address you wish to check.

curl -X GET \
  'https://emailrep.io/v1/[email protected]?key=YOUR_API_KEY' \
  -H 'Accept: application/json'

Python Example

This Python script demonstrates how to make a request and parse the JSON response. Ensure you have the requests library installed (pip install requests).

import requests
import json

api_key = 'YOUR_API_KEY'  # Replace with your actual API key
email_address = '[email protected]' # The email to check

url = f'https://emailrep.io/v1/{email_address}'
headers = {
    'Key': api_key,
    'Accept': 'application/json'
}

try:
    response = requests.get(url, headers=headers)
    response.raise_for_status()  # Raise an HTTPError for bad responses (4xx or 5xx)
    data = response.json()

    print(json.dumps(data, indent=2))

    # Example of accessing specific data points
    if 'reputation' in data:
        print(f"Reputation: {data['reputation']}")
    if 'details' in data and 'disposable' in data['details']:
        print(f"Disposable: {data['details']['disposable']}")
    if 'details' in data and 'breached' in data['details']:
        print(f"Breached: {data['details']['breached']}")

except requests.exceptions.HTTPError as http_err:
    print(f"HTTP error occurred: {http_err} - {response.text}")
except requests.exceptions.ConnectionError as conn_err:
    print(f"Connection error occurred: {conn_err}")
except requests.exceptions.Timeout as timeout_err:
    print(f"Timeout error occurred: {timeout_err}")
except requests.exceptions.RequestException as req_err:
    print(f"An unexpected error occurred: {req_err}")

For more detailed information on parameters and response structures, consult the EmailRep API documentation.