Block disposable and temporary emails
at signup.
Trueguard detects disposable and temporary email addresses at signup against a continuously updated registry of providers like Mailinator, Guerrilla Mail, and 10MinuteMail, then scores the signup alongside device and IP signals. One JavaScript snippet and a REST API. Free for 1,000 verification events per month, no credit card.
How Trueguard detects disposable emails
Disposable email is the most common tool for creating fake accounts. Trueguard flags it at signup and scores it alongside device and network signals.
Continuously updated registry
Thousands of disposable and temporary domains, updated continuously, flagged the moment they appear at signup, including providers like 10MinuteMail and Guerrilla Mail.
Temporary email checkerReal-time email verification
Syntax, MX, and SMTP checks confirm whether an address can actually receive mail, not just whether it looks valid.
Free email verifierPaired with device & IP signals
Disposable email is one signal. Trueguard pairs it with device fingerprinting and IP reputation, so a fresh Gmail behind a proxy is caught too.
Fake account detectionNeed the data via API? See the email verification API. Stopping trial recyclers? See free trial abuse prevention.
The real cost of inaction.
10-60 hours
/week
Support overhead
1-3 FTEs
ongoing
Engineering time
$25K-$200K
/year
Lost conversion revenue
$5K-$75K
/month
Infrastructure overages
Why disposable email detection
is critical for fraud prevention
Disposable emails are the primary tool for fraudsters creating fake accounts. They enable abuse, reward farming, and evasion of detection systems. Without proper detection, your platform becomes vulnerable to sophisticated fraud campaigns that can cost thousands in lost revenue and resources.
*Estimates shown are typical ranges based on aggregated customer data and industry benchmarks.
The competitive advantage
of proactive protection
Protect revenue
Detect and block disposable email addresses before fraudsters can create fake accounts, protecting your revenue and user base.
Scale confidently
Launch features and expand free tiers without fear of abuse - Trueguard adapts to new threat patterns automatically.
Optimize conversion
Improve free-to-paid conversion by ensuring your free tier reliably converts genuine prospects.
Why Trueguard pays for itself in as little as 30 days
Trueguard customers see immediate reductions in abuse and measurable savings across infrastructure, support, and acquisition. Typical outcomes below reflect post-deployment results.
Up to 90%
Reduction in fraudulent signups
$30K-$220K
Average annual savings
Month 1: Immediate impact
- 50-70% reduction in fake account creation
- 20-35% decrease in infrastructure costs
- 10-25% lift in free-to-paid conversion
Month 2: Immediate impact
- ~80% less time spent on manual reviews
- 20-40% higher customer satisfaction (measurable CSAT/NPS lift)
- 150-300% ROI on fraud prevention investment within the first year
All the tools you need to detect fraudulent users.
Identify disposable and low-quality emails so you can block risky signups early.
Detect VPNs, proxies and suspicious IP clusters to reveal hidden abuse sources.
Design rules your way - tailor actions to your product needs and automatically block or flag fraudulent accounts before they impact your business.
Risk and bot scores combine signals to prioritize the highest threats to your business.
Track where user activity comes from and quickly identify suspicious regions or unusual signup patterns.
Trueguard generates unique device IDs to spot multiple accounts per device and automated activity, preventing bot fleets and scripted signups.
Identify bot-like patterns and block automated signups while preserving legitimate traffic.
Made for developers.
Ship protection in minutes - install a JavaScript snippet on your website to start collecting unique visitor IDs
and integrate Trueguard API to your backend to get risk signals and scores. Minimal friction, instant value.
Get started quickly and easily
Install our Javascript snippet and integrate Trueguard API to your backend to see signals in the dashboard within minutes.
Know your users better
Detect suspicious emails, repeated signups and other abuse patterns automatically.
Built for startups to enterprises
Dashboards and tools designed to fit seamlessly into your product and growth workflows.
Real-time insights
Spot fraud signals instantly with live dashboards and alerts.
Frequently asked questions.
Learn about the latest in user verification & fraud prevention.
