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Frequently Asked Questions

Find answers to common questions about our email verification service, pricing, API integration, security, and more. Cannot find what you are looking for? Contact our support team and we will respond within 2 hours.

Find answers to the most common questions about our email verification service. Whether you are just getting started with email validation, exploring our pricing plans, integrating our RESTful API into your application, or looking for details about security and data privacy, the sections below cover the topics our users ask about most frequently. Cannot find what you are looking for? Contact our support team and we will respond within 2 hours.

Our email verification platform helps businesses of all sizes reduce bounce rates, protect sender reputation, and improve deliverability. We process millions of verifications every day with industry-leading accuracy, checking syntax, DNS records, MX entries, SMTP mailbox existence, disposable email detection, role-based address filtering, and catch-all domain identification. Browse the categories below to learn more about how the service works, what each plan includes, how our verification technology operates behind the scenes, and how we keep your data safe and compliant.

Getting Started

Everything you need to know to start verifying email addresses with our platform. From creating your account and running your first verification to understanding result statuses, this section walks you through the basics so you can begin cleaning your email lists and integrating verification into your signup forms right away.

Email verification is the process of checking whether an email address is valid, deliverable, and safe to send to. It involves syntax validation, domain checks, MX record lookups, and SMTP mailbox verification. You need email verification to reduce bounce rates, protect your sender reputation, improve deliverability, and avoid wasting money sending emails to invalid addresses. High bounce rates can get your domain blacklisted by ISPs, causing even your legitimate emails to land in spam folders.

Getting started is simple. You can verify a single email address for free on our free email verifier page without creating an account. For bulk verification, API access, and higher limits, create a free account which includes 100 daily free verifications. To unlock more features and higher volumes, choose a paid plan starting at a $10 Lifetime Deal.

No account is needed for single email verification on our website. Simply visit the free email verifier page, enter an email address, and get instant results. However, creating a free account gives you access to verification history, saved results, bulk upload, and your 100 monthly free verifications.

We offer three main verification methods: Single verification through our website for quick checks, Bulk verification via CSV or Excel upload for cleaning entire email lists, and API verification for real-time integration into your applications, signup forms, and CRM workflows. All methods use the same verification engine with 99.5% accuracy.

Pricing & Plans

Questions about our pricing, billing, and plan features. We offer flexible plans to suit individual developers, growing startups, and large enterprises. Every plan includes full API access and 100 daily free verifications to get started. Visit our pricing page for a detailed comparison of all available tiers, credit volumes, and rate limits.

Our pricing starts with a free plan that includes 100 daily free verifications. Paid plans start at $10 one-time Lifetime Deal with 600 daily credits (Starter), $20 one-time for 1,500 daily credits for life (Professional LTD), and custom pricing for Enterprise. Pay-as-you-go options are also available. All plans include the full verification engine with 99.5% accuracy. View full pricing details.

Yes, our free plan includes 100 daily email verifications with all core verification checks. No credit card is required to sign up. The free plan is perfect for testing our service, verifying small lists, or integrating with our API in a development environment. You can upgrade to a paid plan at any time.

Yes, you can upgrade, downgrade, or cancel your plan at any time from your dashboard. Upgrades take effect immediately with prorated billing for the remainder of the billing cycle. Downgrades apply at the start of your next billing cycle. There are no cancellation fees or long-term contracts on any plan.

Yes, all paid plans come with a 14-day money-back guarantee. If you are not satisfied with our service for any reason, contact our support team within 14 days of purchase for a full refund, no questions asked. Enterprise plans include a 30-day evaluation period.

Technical Questions

Details about how our verification technology works under the hood. Our multi-step verification process checks syntax validity, DNS and MX record lookups, SMTP mailbox probing, disposable domain detection, role-based address filtering, and catch-all server identification to deliver highly accurate results for every email address you verify.

Our email verification achieves 99.5% accuracy by combining multiple verification layers: RFC-compliant syntax validation, domain and DNS resolution, MX record analysis, SMTP mailbox probing, disposable email detection with 150,000+ known domains, catch-all detection, role-based address identification, and spam trap detection. Our machine learning models are continuously trained on billions of verification results to maintain industry-leading accuracy.

We perform comprehensive multi-layer verification: Syntax validation (RFC 5321/5322 compliance), Domain verification (DNS A, AAAA, CNAME records), MX record analysis (mail server identification), SMTP verification (mailbox existence check without sending email), Disposable detection (150,000+ known disposable domains), Catch-all detection (domains accepting all addresses), Role-based detection (info@, admin@, etc.), Spam trap detection, and Risk scoring (0-100 scale).

Single email verification returns results in under 1 second. Bulk verification processes approximately 100,000 emails per hour. A list of 10,000 emails typically completes in 5-10 minutes. Processing speed depends on the responsiveness of recipient mail servers and the complexity of verification checks required. You receive an email notification when bulk verification is complete.

Our bulk verifier accepts CSV, TXT, XLS, and XLSX files. The system automatically detects the column containing email addresses. You can also copy and paste email addresses directly into our verification interface. Maximum file size is 50MB per upload, supporting lists of up to 1 million emails. For larger lists, you can split them into multiple uploads or contact our enterprise team.

Security & Privacy

How we protect your data and maintain the highest security standards. All API communication is encrypted with TLS 1.2 or higher, API keys are hashed at rest, and we never store the email addresses you verify beyond the time needed to deliver your results. We are fully GDPR compliant and follow industry best practices for data protection.

Absolutely. We take data security extremely seriously. All data is encrypted at rest using AES-256 and in transit using TLS 1.3. Our infrastructure is SOC 2 Type II certified, and we are fully GDPR compliant. We never sell, share, or repurpose customer data. Verification data is processed in real-time and stored securely for 30 days (configurable). We conduct annual third-party security audits and penetration testing.

Yes, we are fully GDPR compliant. We offer Data Processing Agreements (DPAs) for all customers. European customer data can be processed within EU data centers. We support the right to deletion, maintain detailed processing logs, and can operate under a zero data retention policy. Our privacy practices are documented in our Privacy Policy.

By default, uploaded email lists and verification results are stored securely for 30 days, allowing you to download results at any time. After 30 days, all data is automatically and permanently deleted. Enterprise customers can configure custom retention policies, including immediate deletion after processing for maximum data privacy.

No, we never send actual emails to the addresses being verified. Our SMTP verification uses protocol-level communication with the recipient mail server to check if a mailbox exists without delivering any message. This non-intrusive method is safe, private, and does not alert the email address owner that their address was checked.

API & Integrations

Questions about our RESTful API, official SDKs for seven programming languages, webhook notifications, and third-party integrations. Our API is designed for developers who want to automate email verification within their applications, whether that means validating addresses at signup, cleaning lists in bulk, or triggering verifications from your existing workflow tools.

Our RESTful API is designed for easy integration. Sign up for an account, generate an API key from your dashboard, and start making verification requests. We provide official SDKs for JavaScript, Python, PHP, Ruby, Java, Go, and C#. Our API documentation includes code examples, endpoint references, error handling guides, and a sandbox environment for testing.

API rate limits depend on your plan: Starter plans include 10 requests per second, Professional plans include 50 requests per second, and Enterprise plans offer custom rate limits up to 500+ requests per second. The batch verification endpoint accepts up to 50,000 emails per request and processes them asynchronously. Rate limit headers are included in every API response.

Yes, our API supports webhook notifications for asynchronous operations. You can configure a webhook URL in your dashboard or via the API. When a bulk verification job completes, we send a POST request to your webhook with the job ID and summary results. Webhooks include HMAC signatures for security verification. You can also poll our status endpoint if you prefer.

We offer native integrations with Salesforce, HubSpot, Mailchimp, ActiveCampaign, SendGrid, Constant Contact, Zoho CRM, and Brevo. We also provide a Zapier integration for connecting with 5,000+ additional apps, a WordPress plugin, and a Shopify app. For custom integrations, our API and SDKs make it straightforward to connect with any platform.

Still Have Questions?

Our support team is ready to help. Reach out and we will get back to you within 2 hours.

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