The Most Accurate Email Validation API for Developers

“Email-Check.app transformed our email marketing. We reduced bounce rates from 12% to 1.8% in just one month. The real-time validation catches typos instantly, and the disposable email detection saved us from thousands of fake signups. ROI was positive within 2 weeks.”

“The accuracy is incredible - 99.9% as advertised. We validate 2M+ emails monthly for our e-commerce platform. Invalid registrations dropped from 15% to 0.8%. The typo suggestions alone recover 7% of email addresses. Customer acquisition cost decreased by 23%.”

“Disposable email detection is a game-changer. We blocked 250,000+ temporary emails that were creating fake trial accounts. Fraud attempts dropped by 87%, saving us $40K monthly. The API is lightning fast - 25ms average response time never slows our signup flow.”

“Integration took 5 minutes with their excellent documentation. The bulk validation processed our 500K email list in under an hour, identifying 18% invalid addresses we were paying to mail. Switching from our previous provider saved us 65% while getting better accuracy.”

“SMTP verification without sending emails is brilliant. We validate B2B leads in real-time, improving sales efficiency by 40%. The name extraction feature helps us personalize outreach. Our email bounce rate dropped from 27% to 4% in 3 months.”

“The API handles our global email campaigns across 180+ countries flawlessly. Role-based email detection prevents us from hitting spam traps. We process 10M validations monthly with zero downtime. Best email validation service we've used in 10 years.”

“Real-time form validation increased our conversion rate by 23%. Users love the instant typo corrections (gmial→gmail). The JavaScript SDK was plug-and-play with our React forms. Bounce rate on welcome emails went from 8% to 0.3%.”

“Bulk validation saved our sender reputation. We inherited a list with 35% invalid emails. Email-check.app cleaned it in 2 hours, preventing certain blacklisting. The detailed risk scoring helps us segment our sends. Worth every penny.”

“The flexible pricing let us start with the Starter plan and scale as needed. Now we validate 100K+ emails monthly. The webhook integration keeps our CRM always clean. Support team is incredibly responsive and helpful.”

“We validate every email at checkout, reducing payment fraud by 73%. The API speed (25ms) doesn't impact checkout flow. Risk scoring identifies suspicious patterns. Chargeback losses dropped from $15K to $4K monthly.”

“Email validation is now part of our data quality pipeline. We validate before every campaign, maintaining <2% bounce rate. The API reliability is exceptional - 99.99% uptime over 18 months. Integrates perfectly with our marketing stack.”

“The pay-as-you-go credits are perfect for our seasonal business. We buy credits during peak times without monthly commitments. Validation accuracy helped us achieve the highest email engagement rates in our industry. Fantastic service!”