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Catch malicious signups before it's too late.

The easy API for instant defense against fake accounts, temporary inboxes, and signup abuse

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Built for developers

Protect free tiers, trials and more.

Catch fake users or duplicate signups to stop abuse of your free tiers and trials, all in one single API call.

MX & disposable domain checks
Live DNS lookups paired with daily updated blocklists detect temporary 10-minute inboxes and invalid mail servers.
Shannon entropy analysis
Calculates local-part randomness score to flag auto-generated bot accounts and synthetic spam addresses instantly.
Canonical address normalization
Automatically strips sub-address tags (`+promo`) and dot variants to detect duplicate user signups across providers like Gmail and Outlook.
Product screenshot
Median global latency
< 150ms
Disposable domains tracked
15,000+
Average Uptime*
99.9%

*Uptime may vary based on your location and network conditions. We monitor our API endpoints continuously to ensure high availability and performance.

Pricing

Plans built to scale with your user base

All plans include full API access. Scale as you grow.

  • Hobby

    For side projects, MVPs, and testing ideas.

    $9.99 /mo

    10,000 checks / month

    About $1.00 per 1,000 checks

    • Up to 1 team member
    • 3 req/sec rate limit
    • Risk score & suggested action
    • Disposable inbox and role account detection
    • MX, TLD risk and entropy checks
    Get started

  • Growth

    For early products seeing their first real traffic.

    $15.99 /mo

    20,000 checks / month

    About $0.80 per 1,000 checks

    • Up to 3 team members
    • 5 req/sec rate limit
    • Risk score & suggested action
    • Disposable inbox and role account detection
    • MX, TLD risk and entropy checks
    Get started

  • Most popular

    Startup

    For growing SaaS products and production apps.

    $29.99 /mo

    50,000 checks / month

    About $0.60 per 1,000 checks

    • Up to 5 team members
    • 10 req/sec rate limit
    • Risk score & suggested action
    • Disposable inbox and role account detection
    • MX, TLD risk and entropy checks
    Get started

  • Scale

    For established products with steady signup volume.

    $49.99 /mo

    120,000 checks / month

    About $0.42 per 1,000 checks

    • Up to 15 team members
    • 20 req/sec rate limit
    • Risk score & suggested action
    • Disposable inbox and role account detection
    • MX, TLD risk and entropy checks
    Get started

  • Enterprise

    For high-throughput traffic and large engineering teams.

    $99.99 /mo

    300,000 checks / month

    About $0.33 per 1,000 checks

    • Up to 30 team members
    • 25 req/sec rate limit
    • Risk score & suggested action
    • Disposable inbox and role account detection
    • MX, TLD risk and entropy checks
    Get started

Prices shown in USD; you may be billed in USD or GBP based on your location. Plans auto-renew monthly. Cancel or switch anytime from your dashboard.

Stop losing money to fake accounts today.

Get your website protected from automated or malicious signups.

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Frequently Asked Questions

Everything you need to know

Answers to common questions about our product, pricing, and support.