Trusted by 10,000+ developers

Stop fake signups before they start.

Protect your app from disposable and temporary emails with the fastest detection API.

Simple REST API
99.9% uptime
Free tier
Real-time updates
Request:
curl "https://bifrost.api-armor.com/v1/check?email=layohe8924@badfist.com" \
-H "Authorization: Bearer aa_your_api_key"
Response:
{
"email": "layohe8924@badfist.com",
"is_disposable": true,
"domain": "badfist.com"
}
The Problem

Fake users cost real money.

Every fake signup wastes resources, skews analytics, and opens abuse vectors.

Trial abuse email icon

Trial Abuse

Disposable emails let bots grab your free trials endlessly.

Bad data analytics icon

Bad Data

Skewed sign-up metrics ruin your marketing and churn analysis.

Security risk warning icon

Security Risk

Fake accounts often lead to spam and fraud attempts.

Robot factory icon representing CAPTCHA bypass

Captcha Blindspot

Even with CAPTCHA, fake users slip through using disposable emails.

Impact Metrics

Real results from companies using API-Armor

Before After
Fake Signups
0.3%10.2%
-97%reduction
Trial Abuse Rate
1.2%23%
-95%reduction
Data Quality
98%67%
+46%improvement

Simple. Fast. Accurate.

Plug API-Armor into your signup flow or backend in minutes.

1

Send any email to /v1/check via REST

Simple HTTP GET request with the email parameter. No complex setup required.

2

Get instant response with metadata

Receive is_disposable status, domain metadata, and data source information in milliseconds.

3

Decide your policy

Block, flag, or score user quality based on the response. Full control over your signup flow.

Python Example:
import requests

r = requests.get(
    "https://bifrost.api-armor.com/v1/check",
    params={"email": "alice@mailnesia.com"},
    headers={"Authorization": "Bearer aa_test_123"}
)
print(r.json())
Response:
{
  "email": "alice@mailnesia.com",
  "is_disposable": true,
  "domain": "mailnesia.com"
}

What makes API-Armor different

Built for developers who need reliable, fast, and accurate disposable email detection.

Fast edge response
Sub-50ms latency from our global CDN edge.
Regularly updated list
Auto-refreshed disposable domain data from 1000+ sources & CT logs.
Smart heuristics
Detects newly registered disposable domains using MX + WHOIS age + patterns.
Privacy-first
No email content stored — ever. Only the domain is checked.
Simple pricing
Transparent per-request pricing, no hidden tiers.
Free forever tier
100 checks/month completely free for developers.

Works everywhere emails matter.

From startups to enterprise, fits seamlessly into your workflow.

SaaS platform icon

SaaS Platforms

Block disposable trial signups

E-commerce shopping icon

E-commerce

Stop fake promo hunters

CRM database icon

CRMs & Databases

Clean existing email lists

Authentication API icon

Auth APIs

One-line signup check

Integration flow:
1User submits email2API-Armor check3Apply policy

Simple and predictable

Transparent pricing that scales with your business. No hidden fees, no surprises.

Free
$0
per month
100
monthly checks
Great for small projects
Developer
$9
per month
10,000
monthly checks
Priority API access
Most Popular
Pro
$49
per month
100,000
monthly checks
Includes SLA & analytics

No credit card required • Cancel anytime • 30-day money-back guarantee

Built for developers

Use your favorite language and framework. Our API works everywhere.

Supported Languages & SDKs

Can't find your language? Our REST API works with any HTTP client.

Need an SDK? Let us know and we'll prioritize it.

Python Example:
import requests

r = requests.get(
    "https://bifrost.api-armor.com/v1/check",
    params={"email": "demo@badfist.com"},
    headers={"Authorization": "Bearer aa_live_ABC123"}
)
print(r.json())
Response:
{
  "email": "demo@badfist.com",
  "is_disposable": true,
  "domain": "badfist.com"
}

Trusted by developers who care about clean data.

10M+
emails/day
99.9%
uptime
50ms
avg response
R

"API-Armor cut our fake signups by 92% overnight. Integration took 10 minutes."

Rohan · Founder @ SaaSly

Trusted by teams at
ProductHunt
IndieHackers

Security & Compliance

Enterprise-grade protection built into every request.

All systems secure

TLS 1.3

End-to-end encryption

GDPR Ready

No personal data stored

Edge Routing

EU / US / IN regions

Encrypted

Data at rest protection

Ready to block fake signups?

Free plan available · No credit card required

Get Free API Key