Registration Spam Protection API
Stop Fake Signups Before They Start
Fake accounts inflate your metrics, abuse your free tier, and erode platform trust. ActiveLayer checks every registration in milliseconds using AI-powered email, username, IP, and behavioral analysis. No CAPTCHAs. No friction for real users. Just clean signups from day one.
✓ Millisecond response time
✓ 99.5%+ detection accuracy
✓ Zero CAPTCHAs
✓ 1,000 checks for free
Built by the same team whose software is trusted by 30,000,000+ websites worldwide.
Every Signal You Need to Catch Fake Registrations
Stop guessing which signups are real. ActiveLayer analyzes nine layers of intelligence before the account is ever created.
Email Pattern Analysis
Detects spam patterns, gibberish addresses, and known bad actors by analyzing the full email structure. Not just a blocklist. Real intelligence.
Disposable Email Detection
Identifies throwaway email providers like Mailinator, Guerrilla Mail, and thousands more. Fake users can’t hide behind temporary inboxes.
Username Spam Detection
Catches auto-generated usernames, keyword-stuffed handles, and bot naming patterns that real users never create.
IP Reputation Scoring
Checks every registration IP against real-time threat intelligence. Flags proxies, VPNs commonly used for abuse, data centers, and known spam sources.
Behavioral Signal Analysis
Evaluates submission timing, field interaction patterns, and request metadata. Bots that pass static checks still fail behavioral analysis.
Confidence Scoring
Every registration gets a 0 to 100 confidence score. You decide the threshold. Block high-risk signups automatically or flag them for review.
Detection Transparency
See exactly why a registration was flagged. Every verdict includes a breakdown of which signals triggered and how they scored. No black box.
Automatic Fallbacks
If ActiveLayer is unreachable, your registration flow continues uninterrupted. Built-in failsafes mean your signup page never breaks.
Unlimited Sites and Apps
One API key works across every app, platform, and domain you operate. No per-site fees. No per-domain restrictions.
Three Steps to Spam-Free Registrations
Add one API call to your registration flow. ActiveLayer handles the rest.
1
Get Your API Key
Create a free ActiveLayer account and copy your API key. No credit card required. You’re ready to integrate in under a minute.
2
Add the Check to Your Registration Endpoint
Send the registration data to ActiveLayer before creating the account. The API returns a verdict in milliseconds.
3
Real Users Get Through. Fake Accounts Don’t.
ActiveLayer returns a verdict in under 50ms. Legitimate signups never notice it’s there. Spam accounts are blocked before they exist. Your database stays clean. Your metrics stay honest.
Why Developers Choose ActiveLayer for Registration Protection
Registration spam is a platform problem. ActiveLayer is the platform-grade solution.
Your Growth Numbers Finally Mean Something
Every fake signup inflates user counts, drops activation rates, and makes cohort analysis meaningless — your team ends up making decisions based on noise. ActiveLayer catches fake registrations before the account is created, so your user table reflects real people and your metrics reflect real engagement. When you report 10,000 new signups, every one is genuine.
Zero Friction Between Your User and the Sign Up Button
CAPTCHAs reduce signup completion by up to 40% — every image grid and checkbox is a reason for a legitimate user to abandon your funnel. ActiveLayer runs entirely server-side with no JavaScript widget on your page: your user fills out the form, clicks sign up, and they’re in. You protect your platform without punishing the people you’re trying to acquire.
Every Attack Vector Covered in One API Call
Email verification alone can’t stop registration spam — disposable services generate verified addresses in seconds, and IP blocking is a game sophisticated attackers win every time. ActiveLayer combines email pattern analysis, disposable email detection, username evaluation, IP reputation, and behavioral signals into a single check. When a bot wave hits your endpoint with 500 Mailinator addresses and auto-generated usernames in 10 minutes, every single one is caught.
Automate Decisions With Granular Confidence Scores
Manual review works at 100 signups a day; at 10,000 it breaks entirely. ActiveLayer gives every registration a confidence score from 0 to 100 — set your threshold and automate the decision: block above 80, flag 50–80 for review, approve everything below 50 instantly. Your team reviews edge cases instead of drowning in a queue.
Frequently Asked Questions
Common questions about protecting your registration flow with ActiveLayer.
ActiveLayer maintains a continuously updated database of disposable email providers covering thousands of domains including Mailinator, Guerrilla Mail, Temp Mail, and their variants. Beyond simple domain matching, ActiveLayer analyzes email patterns used by disposable address generators to catch custom domains and new providers the moment they appear.
ActiveLayer’s confidence scoring gives you full control over how aggressively you filter. Every registration gets a score from 0 to 100. You set the threshold. Most teams start at 80 and adjust based on their data. Detection transparency shows exactly which signals triggered, so you can audit every decision. In testing, false positive rates are consistently below 0.5%.
Yes. ActiveLayer can check any registration regardless of authentication method. For OAuth signups (Google, GitHub, Apple), you can still verify the email address, IP, and username through the API. Many teams use a lower confidence threshold for OAuth signups since the email is already verified by the provider, and a higher threshold for email/password registrations.
ActiveLayer’s behavioral analysis detects velocity patterns automatically. When hundreds of registrations arrive from similar IPs, follow similar timing patterns, or use sequentially generated email addresses, the confidence scores escalate in real time. You don’t need to configure rate limiting rules. The system recognizes coordinated attacks and scores them accordingly.
ActiveLayer processes registration data solely for spam detection purposes. No personal data is stored beyond what is needed for the real-time check. The API does not use cookies, does not fingerprint browsers, and does not track users across sites. ActiveLayer is designed to be privacy-first, which makes compliance straightforward. Your privacy policy only needs to disclose that registration data is checked for fraud prevention.
Your registration flow continues normally. ActiveLayer includes automatic fallbacks so your signup page never breaks. If the API times out or returns an error, the registration proceeds as if no check was performed. You can configure fallback behavior to either allow or hold the registration based on your risk tolerance.
Absolutely. ActiveLayer is designed to complement email verification, not replace it. The best approach is to run ActiveLayer first at the point of registration to block obvious spam, then send a verification email to the remaining signups. This way, you don’t waste email sends on disposable addresses and bot-generated accounts. Your email verification catches the rest.
The free plan includes 1,000 checks per month. No credit card required. Pro is $19 per month for 25,000 checks. For platforms processing more than 25,000 registrations per month, contact the team for volume pricing. Every plan includes unlimited sites, unlimited apps, and full API access.