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Syntax validation - every address is checked against RFC 5322 standards to catch typos, malformed formats, and missing characters before any external lookup is attempted.
DNS and MX record lookup - Proofy queries the domain's DNS records to confirm the domain exists and has valid MX (Mail Exchange) records configured to receive email.
Live SMTP handshake - the verifier opens a connection to the recipient's mail server and simulates the start of an email delivery, confirming whether the specific mailbox accepts mail - without actually sending a message.
Disposable detection - addresses from known throwaway services (Mailinator, Guerrilla Mail, Temp-Mail, and 4,000+ other providers) are flagged separately so you can remove them from your list.
Catch-all detection - domain-wide accept-all configurations are identified and labeled as risky, since deliverability cannot be confirmed at the mailbox level.
Role-based filtering - addresses like info@, support@, admin@, and noreply@ are flagged as role-based for separate review, since they typically don't belong to a single decision-maker.
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Bulk email verification is the process of checking thousands or millions of email addresses at once against syntax rules, DNS and MX records, and live SMTP responses - without sending a single message. Instead of waiting for hard bounces to damage your sender reputation, every address is validated in advance and labeled as valid, invalid, risky, disposable, catch-all, or role-based, so you know exactly which emails are safe to send to.
Sending campaigns to unverified email lists is one of the fastest ways to lose deliverability. Invalid addresses cause hard bounces, disposable emails inflate your list with throwaway inboxes that never convert, and catch-all domains accept every incoming address regardless of whether the mailbox actually exists. Mailbox providers like Gmail, Microsoft 365, and Yahoo track bounce rates and complaint signals across every send - once your domain reputation drops, even your legitimate subscribers stop seeing your messages in the inbox.
Proofy's bulk email verifier processes large CSV or TXT files in minutes, returning a fully labeled export ready for re-import into your CRM, ESP, or marketing automation platform. Every address goes through a multi-layer check: syntax validation, DNS lookup, MX record verification, and live SMTP handshake - all without sending an actual email to the recipient. The result is a clean, segmented list that protects your sender reputation, reduces hard bounces, and keeps deliverability high before your next campaign goes out.
We don’t offer free credits to prevent abuse, but new users can purchase 1,000 trial credits for just $4. Alternatively, email us from a company work email address to receive credits for test.
Catch-all, also known as “accept-all” is a domain-wide setting mail server that is configured to accept all emails sent to the domain, no matter if the specified mailbox exists or not. A catch-all email account is an address specified for receiving all messages addressed to a domain’s incorrect email address.
Therefore, use caution when sending to risky addresses. Accept All, Disposable, and Role addresses are classified as Risky.
All data is different, and the time it takes to process depends on the types of emails and on the domains we are reaching out to. On average, our system processes a list of 100,000 emails in 45 minutes, some time it faster.
While we strive for close to 100% accuracy, we cannot guarantee it entirely. Over time, email statuses can change as addresses are deactivated, deleted, or become full. It’s essential to periodically verify your email database to maintain accuracy and avoid potential bounces.
The Bulk Email Verifier lets you verify a list of email addresses. You can upload a list of email addresses to be verified in Bulk. Also you can use API for verification your email base by server to server with maximum speed. The Email Verifier tests the mail servers to see if there is a positive reply without sending an email.
No, we do not send emails to verify addresses. Our verification process uses advanced algorithms to validate email addresses without sending any messages.
No, we do not sell, share, or use your data in any way. Your email lists remain completely private and secure. You can delete your data manually, or it will be automatically deleted after 60 days.
You can use our web service without any apps or programs on your PC. Bulk email verification is done online via our servers, so your IP reputation is safe as well. All you need is to upload the email list and download the results.
The speed of email validation is influenced by our software, the availability of remote servers, and the type of email providers. We aim to provide rapid validation while ensuring the highest level of accuracy.
The cost of cleaning an email list varies by service and list size. Proofy offers fast, affordable solutions with tiered pricing to fit any budget. Our efficient algorithms ensure a cleaned list without delay.
Proofy offers reliable email validation at an affordable rate, outperforming many pricier alternatives. It's straightforward to use and easy to integrate into existing systems.
The interface is incredibly intuitive, making it easy to upload and organize files without a steep learning curve. The collaborative features are a standout, allowing me to get real-time feedback from team members seamlessly. The platform’s security measures give me peace of mind knowing that my sensitive information is protected. Overall, Proofy.io has streamlined my document management process significantly, saving time and reducing the hassle of traditional proofing methods.
