Email Reputation API
Easily assess the reputation of any email address, detect risky senders, prevent fraud, and improve deliverability with real-time reputation scoring and insights.
API benefits
Real-time Email Reputation Scoring
Blacklist & Spam Trap Detection
Historical Email Activity Insights
Privacy-Compliant & Secure
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4.8 from 1,863 votes
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The Email Reputation API ensures you have clean and reliable email lists
Weekly updates
Real-time email reputation scoring
Instantly assess the trustworthiness of any email address with a risk-based reputation score.
Daily updates
Deliverability status check
Verify if an email address is deliverable, undeliverable, or at risk due to a full inbox.
Daily updates
Free vs. business email detection
Identify whether an email is from a free provider (like Gmail) or belongs to a business domain.
Suspicious username detection
Flag email addresses with unusual or high-risk username patterns.
Disposable email detection
Screen against thousands of known disposable email providers to prevent fraud.
Daily updates
Catch-all email identification
Detect catch-all domains that accept all emails, ensuring better validation accuracy.
Daily updates
Bulk email reputation checks
Validate multiple email addresses at once with our high-speed bulk API.
Privacy-focused & GDPR-compliant
Protect user data with a privacy-first approach, ensuring full compliance with regulations.
Monthly updates
Role-based email detection
Identify role-based emails (e.g., support@, sales@) to gauge quality and intent.
SPF & DMARC compliance check
Validate whether an email domain enforces SPF and DMARC security measures.
Weekly updates
Historical email breach monitoring
Check if an email has been exposed in data breaches and assess risk levels.
Domain age & registration data
Analyze when a domain was registered, last renewed, and its expiration date.
Weekly updates
Spam trap & blacklist screening
Detect if an email or domain is associated with spam traps or blocklists.
Monthly updates
High-risk TLD detection
Identify domains with risky top-level domains (TLDs) that are often linked to spam.
Real-time MX & SMTP validation
Confirm that an email's mail servers (MX records) and SMTP settings are valid.
Organization & provider insights
Retrieve details about the email's organization, provider, and associated business type.
Get your free
Email Reputation API
key now
4.8 from 1,863 votes
See why the best developers build on Abstract
No credit card required
Simple and transparent pricing
Monthly
Annually (save 10%)
Free
Assess email risk and reputation.
$0
/ month
100 requests
start for free
Starter
Validate emails & ensure deliverability.
$17
/ month
Paid annually
Choose requests / year:
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
start for free
Standard
Enrich sender and domain details.
$37
/ month
Paid annually
Choose requests / year:
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
start for free
Enterprise
Customize data for advanced needs.
Custom
Contact
Free
Assess email risk and reputation.
$0
/ month
100 requests
start for free
Starter
Validate emails & ensure deliverability.
$17
/ month
Choose requests / month:
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
start for free
Standard
Enrich sender and domain details.
$37
/ month
Choose requests / month:
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
start for free
Enterprise
Customize data for advanced needs.
Custom
Contact
API Response Examples
Abstract Starter
{
"email_address": "richard.hendricks@abstractapi.com",
"email_deliverability": {
"status": "deliverable",
"status_detail": "valid_email",
"is_format_valid": true,
"is_smtp_valid": true,
"is_mx_valid": true,
"mx_records": [
"alt2.aspmx.l.google.com",
"aspmx.l.google.com",
"alt3.aspmx.l.google.com",
"alt4.aspmx.l.google.com",
"alt1.aspmx.l.google.com"
]
}
}
Abstract Standard
{
"email_address": "richard.hendricks@abstractapi.com",
"email_deliverability": {
"status": "deliverable",
"status_detail": "valid_email",
"is_format_valid": true,
"is_smtp_valid": true,
"is_mx_valid": true,
"mx_records": [
"alt2.aspmx.l.google.com",
"aspmx.l.google.com",
"alt3.aspmx.l.google.com",
"alt4.aspmx.l.google.com",
"alt1.aspmx.l.google.com"
]
},
"email_sender": {
"first_name": "Richard",
"last_name": "Hendricks",
"email_provider_name": "Google",
"organization_name": "Abstract API",
"organization_type": "commercial"
},
"email_domain": {
"domain": "abstractapi.com",
"domain_age": 1871,
"is_live_site": true,
"registrar": "NameCheap, Inc.",
"registrar_url": "https://namecheap.com",
"date_registered": "2020-05-13",
"date_last_renewed": "2025-04-13",
"date_expires": "2026-05-13",
"is_risky_tld": false
}
}
Abstract Professional
{
"email_address": "richard.hendricks@abstractapi.com",
"email_deliverability": {
"status": "deliverable",
"status_detail": "valid_email",
"is_format_valid": true,
"is_smtp_valid": true,
"is_mx_valid": true,
"mx_records": [
"alt2.aspmx.l.google.com",
"aspmx.l.google.com",
"alt3.aspmx.l.google.com",
"alt4.aspmx.l.google.com",
"alt1.aspmx.l.google.com"
]
},
"email_quality": {
"score": "0.80",
"is_free_email": false,
"is_username_suspicious": false,
"is_disposable": false,
"is_catchall": true,
"is_subaddress": false,
"is_role": false,
"is_dmarc_enforced": true,
"is_spf_strict": false,
"minimum_age": null
},
"email_sender": {
"first_name": "Richard",
"last_name": "Hendricks",
"email_provider_name": "Google",
"organization_name": "Abstract API",
"organization_type": "commercial"
},
"email_domain": {
"domain": "abstractapi.com",
"domain_age": 1871,
"is_live_site": true,
"registrar": "NameCheap, Inc.",
"registrar_url": "https://namecheap.com",
"date_registered": "2020-05-13",
"date_last_renewed": "2025-04-13",
"date_expires": "2026-05-13",
"is_risky_tld": false
},
"email_risk": {
"address_risk_status": "low",
"domain_risk_status": "medium"
},
"email_breaches": {
"total_breaches": 0,
"date_first_breached": null,
"date_last_breached": null,
"breached_domains": []
}
}
The best build
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The Email Reputation API has been a huge asset for our business. Before using it, we struggled with fraudulent sign-ups and poor email deliverability. Now, we can instantly assess the reputation of an email address, flag potential risks, and ensure our messages reach real users.
Sarah Mitchell, Nexus
Enterprise ready
Abstract comes with security, compliance, and reliability built into the core. That’s why the Fortune 500, governments, and businesses in critical industries like financial services, healthcare, and airlines trust us.
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Email Reputation API Changelog
Updated domain_risk_status scoring to incorporate signals from domains with recently expired and re-registered SSL certificates.
February 23, 2026
Improved is_username_suspicious detection to better identify auto-generated username patterns used in bulk account creation.
February 18, 2026
Improved domain age evaluation to better flag recently registered domains with no live website.
January 20, 2026
Check our API Guides
FAQ about Abstract's
Email Reputation API
What is the Email Reputation API?
The Abstract API Email Reputation API analyzes an email address and provides a reputation score based on various risk factors. It helps identify whether an email is associated with spam, fraud, or poor deliverability, allowing businesses to filter out risky users, improve email engagement, and protect their platforms from abuse.
What factors influence an email’s reputation score?
The Email Reputation API considers multiple factors, including the email’s deliverability status, domain age and history, blacklist records, presence in data breaches, role-based usage (e.g., support@, sales@), and whether it’s linked to disposable or high-risk domains. These insights help determine whether an email is trustworthy or poses a potential risk.
How can the Email Reputation API improve email deliverability?
By identifying and filtering out emails with low reputation scores, spam traps, or high bounce risks, the API helps businesses maintain a clean email list. This reduces bounce rates, improves sender reputation, and ensures that messages reach legitimate recipients, leading to higher engagement and better inbox placement.
Get your free
Email Reputation API
key now
4.8 from 1,863 votes
See why the best developers build on Abstract
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