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An email verifier is a tool that checks whether an email address is real, active, and safe to send to - without actually delivering a message. It validates the address syntax, verifies the domain's MX records, and performs an SMTP handshake to confirm the mailbox exists and can receive email. The result tells you whether each address is deliverable, risky, invalid, or disposable.
Sending campaigns to unverified lists is one of the fastest ways to damage your sender reputation. Invalid addresses cause hard bounces, disposable emails waste your send budget, and catch-all domains inflate your apparent list size while hiding real deliverability risk. A proper email verification process removes all of these before you send — protecting your domain score and improving open rates.
Proofy's email verifier runs every address through a multi-layer check: syntax validation, DNS lookup, MX record verification, and live SMTP handshake - all in seconds, without sending a single email. You get a clean, segmented export with every address labeled, so your team knows exactly what to do with each result. Get started from $4 for 1,000 verification credits - pay only for what you use, no subscription required.
Think of it as a pre-flight check for your email list. Proofy connects to the recipient's mail server and confirms - without sending anything - whether that mailbox will accept your message. The response comes back in seconds: deliverable, risky, catch-all, or invalid. No guessing, no bounces.
Email validation checks whether an address is correctly formatted (syntax check). Email verification goes further - it confirms the domain is active, the mail server responds, and the specific mailbox actually exists. Proofy runs both simultaneously - syntax first, then live SMTP confirmation - so every result reflects the true deliverability of the address.
Six categories are returned: Valid (safe to send), Invalid (mailbox doesn't exist or domain is down), Disposable (temporary throwaway addresses), Catch-all (server accepts everything - deliverability unknown), Role-based (info@, admin@, support@), and Risky (likely to bounce or trigger spam complaints). Each category is exported separately.
Proofy delivers 99%+ accuracy on valid and invalid results. Catch-all domains are the only grey area - servers that accept every incoming address regardless of whether the mailbox exists. These are flagged separately so you decide how to handle them. Our SMTP engine is continuously updated to track behavior changes across all major providers.
No. The verification process checks without sending any message. It simulates the beginning of an SMTP delivery and terminates before any message is sent. The address owner is never notified and no email appears in their inbox.
Bulk verification supports email verification for lists of up to 1M addresses per upload via CSV or TXT file. For real-time verification, the API processes individual addresses in under one second. New accounts start with 1,000 verification credits for just $4 - enough to test the full service before scaling.
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.
