Block Disposable & Temp Emails via API — Stop Fake Signups, Abuse & Trial Fraud (1-Line Integration) vs Sunboard (2026)

Block Disposable & Temp Emails via API — Stop Fake Signups, Abuse & Trial Fraud (1-Line Integration)

https://tempmailchecker.com

TempMailChecker instantly detects disposable emails like Mailinator, GuerrillaMail, and Temp-Mail to stop fake signups, coupon abuse, and trial fraud. Real-time REST API — 1 request returns temp: true/false. Sub-5ms processing, 3 global regions. Free tier available. Protect your signup flow, improve deliverability, and ensure only real users enter your database. --- Site Content --- New Custom Blacklist & Whitelist — full control over which domains get blocked. Configure your lists → TempMail Checker Docs Status Blog Pricing Get API Key Dashboard Logout Stop temp emails. Keep real users. Temp email checker API to detect disposable email addresses in real time. One request. One boolean. 25 free checks/day. Get Free API Key View Docs Live API Demo 🔍 Detecting... 🌐 Auto EU US Asia Check Request GET /check?email= [email protected] Response Detecting fastest endpoint... 47,382 E-Mail addresses checked this month 277,000 + Disposable domains in our database ⚡ Sub-ms processing , ~70ms worldwide How to Detect Disposable Emails Automatically Add a real-time temporary email checker to your signup flow with a single API request. TempMailChecker detects Mailinator, 10MinuteMail, GuerrillaMail, and 277,000 + disposable email domains with sub-millisecond processing and ~70ms real-world latency from US, EU & Asia endpoints — stopping fake accounts before they enter your database. 1 Add Email Check Call our API when a user signs up to verify their email address. GET /check?email=... 2 Check Response Block or flag users where the response returns: { "temp": true } 3 You're Protected That's it — your platform now blocks disposable email signups automatically. ✓ Spam-free signups Use Cases: When to Block Temporary Emails Temporary email addresses are used for fake signups, promo abuse, spam, and fraud. A disposable email checker helps SaaS, newsletters, communities, and e-commerce stores block throwaway emails — protecting revenue, analytics, and user trust. 🚫 Block Fake Signups Stop bots and throwaway accounts at the registration gate. Ensure every user in your database is real. Learn more 💰 Improve Conversions Disposable emails don't convert. Filter them out to focus your sales and marketing efforts on real leads. Learn more 🎁 Protect Promos Prevent referral fraud and coupon abuse. Stop users from creating infinite accounts to farm rewards. Learn more 📧 Clean Your Lists Remove dead-end disposable addresses from your newsletters to improve deliverability and open rates. Learn more 🛡️ Reduce Abuse Spammers use disposable emails to harass users. Block them at the door to keep your community safe. Learn more 💬 Protect Communities Keep comments, reviews, and chat real. Ensure user accountability by requiring permanent email addresses. Learn more Features: The Fastest Disposable Email Checker API A temp email checker built for developers who need instant abuse prevention without complexity. One GET request, one JSON response — no SDKs, no dependencies. Integrate in minutes and automatically update as new disposable domains emerge daily. 🔥 Simple JSON One simple GET request returns a clean JSON response. No complex objects or SOAP envelopes. ⚡ Ultra-Fast Sub-millisecond API processing with ~70ms real-world latency from US & EU endpoints. Won't slow down your signup flow. 📋 Massive Database We track over 277,000 known disposable email domains and update our list daily. 🔁 Auto-Updates Our background workers constantly crawl and verify new spam domains so you don't have to. 🛠 Works Everywhere REST API works with Node, Python, PHP, Go, Ruby, or standard cURL. No SDK required. 🆓 25 Free Requests/Day Get 25 API requests per day on the free tier. No credit card required. Perfect for small projects and testing. ⚡ Designed for Real-Time Signup Flows Sub-millisecond processing and ~70ms real-world latency from dual regional endpoints — fast enough to run synchronously without slowing your users down. 🌍 Pick Your Endpoint Choose the closest region — no probes, no guessing: tempmailchecker.com EU Region us.tempmailchecker.com US Region asia.tempmailchecker.com Asia Region 📊 Real-World Latency Europe ~25ms N. America ~40ms Asia-Pacific ~30ms 🇧🇷 S. America ~70ms 🇦🇺 Oceania ~60ms 💡 Why This Matters Most detection APIs are too slow for synchronous signup requests. TempMailChecker runs inline — not in background jobs. 👉 Disposable emails blocked before they reach your database. 🚀 Test It Live — Check an Email in Real Time Simple, Transparent Pricing Start free, scale as you grow. All plans include full disposable email checker API access, 277,000 + domains, and sub-ms response times. Free $0 25 requests/day Perfect for testing your integration before going live. 💡 Build & test locally before you ship Get Started Starter $ 12 /mo 3,000 requests/month Production-ready. No daily caps holding you back. No daily rate limit Custom blacklist & whitelist Email support 💡 Launching soon? This gets you live Get Starter Growth $ 29 /mo 15,000 requests/month For teams serious about blocking fake signups. Everything in Starter Higher burst limits Priority support 💡 If you charge money for your product, start here Get Growth Scale $ 69 /mo 60,000 requests/month High-volume protection for e-commerce & fintech. Everything in Growth Dedicated throughput Slack support channel 💡 When every fake signup costs you money Get Scale Enterprise Custom 250,000+ requests/month Dedicated infrastructure, SLA & custom integrations. Everything in Scale 99.9% uptime SLA Dedicated account manager 💡 For teams with compliance & volume needs Contact Us Upgrade anytime. Downgrade anytime. No lock-in. All plans include full API access, all regional endpoints, and 277,000 + domains. Questions? Get in touch FAQ — Temporary Email Checker & Detector Find answers about how to check disposable email addresses, block temp mail services, and use a temporary email detector in your signup or checkout flows. Less spam, fewer fake users, stronger conversions. What are disposable email addresses? + Disposable email addresses are temporary inboxes that self-destruct after a short period. Services like Mailinator, Guerrilla Mail, and 10MinuteMail let users create instant throwaway emails without registration. They're designed for one-time use and typically expire within minutes to hours. Why block disposable email? + Disposable emails are commonly used for spam, fraud, and abuse. They allow users to bypass email verification, exploit free trials repeatedly, create fake accounts, and avoid accountability. Blocking them protects your platform from bots and ensures you're collecting real, contactable users. Why do people use disposable email? + Legitimate uses include protecting privacy from spam, signing up for one-time downloads, or testing services. However, they're frequently abused for referral fraud, coupon stacking, creating fake reviews, trolling in communities, and evading bans. Our API helps you distinguish between these use cases. How does the temporary email detector work? + We maintain a continuously updated database of 277,000 + known disposable email domains. Our API performs an instant lookup against this list and returns a simple true/false response. With sub-millisecond processing and endpoints in the US, EU, and Asia, you get ~70ms real-world latency wherever your users are. Where do I report a domain to be blocked? + Found a disposable email domain we're missing? Email us at [email protected] with the domain name and we'll review it for inclusion. We typically add verified domains within 24 hours. How can I get a domain unblocked? + If your legitimate domain has been incorrectly flagged, contact us at [email protected] with proof of ownership and your use case. We manually review all unblock requests and respond within 48 hours. 🛡 TempMailChecker High-performance API to detect disposable and temporary email addresses. One request, one boolean. Sub-5ms response times. Product Get API Key Pricing Documentation API Status Blog Changelog Resources GitHub Code Examples What Are Disposable Emails? FAQ Free Tools Email Detector DKIM Analyzer SPF Analyzer CIDR to IP Range Company Security Privacy Policy Terms of Service Contact Available On RapidAPI Chrome Extension © 2025 TempMailChecker. One request. One boolean. Privacy Terms

Sunboard

https://www.sunboardhq.com

Reduce churn with simple onboarding tools. Build product tours, create interactive checklists, and send in-app messages to guide your users to success --- Site Content --- Pricing Blog Log in Register Turn More Signups Into Paying Customers Stop watching signups disappear. Guide them to their first win with onboarding that actually converts. Start a Free Trial Sign up with google Trusted by Founders: Why Your Signups Aren't Converting Without Sunboard Users land confused, don't know what to do first They wander through your product, completely missing the features that drive value Support team drowning in "how do I...?" questions Users leave before seeing any value Free-to-paid conversion stays stuck at 2-5% With Sunboard Clear checklist shows exactly what to do next Guided tours explain features at the right moment Users self-serve through activation More signups reach their "aha moment" Conversion rate improves week over week From Signup to Paid Customer in 3 Steps 1 Identify the Critical Path Know which actions actually lead to conversions. Map the 3-5 key steps that take users from signup to their first payment—no guessing, just data. 2 Guide Users Through It Remove friction at every step with checklists that show progress and tours that eliminate confusion exactly when it matters most. 3 Measure and Optimize Track completion rates, see where users drop off, and continuously improve. Know what's working and double down on what drives conversions. 1 Identify the Critical Path Know which actions actually lead to conversions. Map the 3-5 key steps that take users from signup to their first payment—no guessing, just data. 2 Guide Users Through It Remove friction at every step with checklists that show progress and tours that eliminate confusion exactly when it matters most. 3 Measure and Optimize Track completion rates, see where users drop off, and continuously improve. Know what's working and double down on what drives conversions. Built For Activation Everything you need to guide users from signup to paid Onboarding Checklists Show users exactly what to do next. Track progress, celebrate wins, and guide them to their first value moment—without drowning your support team in "how do I...?" questions. Product Tours Eliminate confusion at critical moments. Guide users to the features that drive conversions or explain complex workflows right when they need help most. In-app Messages Reach users at exactly the right moment. Welcome new signups, highlight value they're missing, or re-engage users before they churn. Core Analytics See what's actually driving conversions. Track completions, spot drop-off points, and optimize your activation flow based on real data—not guesswork. Build tours in minutes, not days Launch your app from the editor, click what you want to highlight, add your tour steps. No Chrome extensions, no CSS selectors, no hunting for elements. Just point, build, publish. See your tour as you build it View exactly what users will see while you're building. Reorder steps, adjust messaging, preview instantly. No publishing to test, no guessing No technical skills required Click elements, add content, publish. That's it. No technical skills, no developer handoffs, no need to spend weeks going back and forth with the devs Works with your existing app Add one script. Start building. No data attributes, no code changes, no tagging elements. Intelligent detection finds what you click—automatically Start Free, Upgrade When Ready Free up to 50 monthly active users. No credit card required Free Test and validate $ 0 per month, 50 MAU Get started free Unlimited Checklists Unlimited Product tours Hide branding Starter Most Popular For growing teams $ 29.99 per month, 250 MAU Start a Free Trial Unlimited Checklists Unlimited Product tours Hide branding Growth For scaling SaaS $ 49.99 per month, 1,000 MAU Start a Free Trial Unlimited Checklists Unlimited Product tours Hide branding " Seeing my hard-earned users sign up only to disappear in the first week was heartbreaking. The problem wasn't the product—it was the onboarding. Sunboard is the tool I wish existed back then. Simple enough to ship in minutes, powerful enough to actually make a difference. Built for SaaS founders who need results, not complexity. " Sean Safstrom founder & Onboarding nerd Questions? Feedback? Email me directly: [email protected] Frequently Asked Questions Explore your data, build your dashboard, bring your team together. How long does it take to get started? Do I need technical skills to build tours? What happens when I hit my MAU limit? How is this different from Appcues/Pendo/Intercom? Will this work with my tech stack? Can I cancel anytime? What if I need help? Ready to Fix Your Conversion Rate? Start free, see results in your first week. Start a Free Trial Book a demo Got a scaling SaaS with real activation challenges? Let's talk. I'll show you how Sunboard works, answer your questions, and we'll figure out if it's the right fit together. Latest from the blog Stop Reducing Churn: Focus on Activation Instead Learn why activation-focused onboarding beats churn reduction. Discover the counterintuitive strategy that increases retention by 30-50% without fighting exits. November 26, 2025 By Sean How to Build Onboarding Checklists That Actually Work Learn how to build user onboarding checklists that boost activation by 25%, reduce first-week churn by 75%, and turn confused new users into engaged customers. November 5, 2025 By Sean 7 Onboarding Email Best Practices Every SaaS Should Follow Your onboarding emails are often the difference between a customer who churns and one who stays for years. September 27, 2025 By Sean Stop losing your users after their first signup, together we'll help your users get the most of your product and stick around longer! Made in Sweden 🇸🇪 Company Home Pricing Free Tools Blog Legal Terms of Service Privacy Policy How We Compare Sunboard vs walkme Sunboard vs pendo Sunboard vs whatfix Sunboard vs appcues Sunboard vs userguiding Sunboard vs chameleon Sunboard vs product-fruits Sunboard vs userpilot Learn The Free-to-Paid Conversion Guide for SaaS Founders Building Checklists That Actually Work 87% of SaaS Companies Don't Use Onboarding Tools Keeping Customers Without Breaking the Bank