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An email verifier checks whether an email address can receive mail without sending a message. Proofy validates the address format, confirms the domain and MX records, and checks the receiving mail server to classify the address as valid, invalid, risky, disposable, catch-all, or role-based.
Email verification helps remove bad addresses before campaigns, database imports, and CRM updates, reducing hard bounces and keeping poor-quality contacts out of your sending lists.
Proofy combines syntax, domain, MX, SMTP, disposable, catch-all, role-based, and risk checks in one verification process. For a deeper technical breakdown, see how email verification works.
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 combines syntax, domain, MX, SMTP, disposable, catch-all, role-based, and risk checks to classify email addresses using multiple verification signals. Catch-all domains are flagged separately because their mail servers may accept messages without confirming whether a specific mailbox exists.
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.
Batch 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 5,000 verification credits for just $5 - 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.
Sending emails to invalid addresses can result in high bounce rates, which can harm sender reputation and email deliverability. Proofy.io verifies email addresses to ensure they are valid and deliverable, reducing bounce rates. The verification process is fast, allowing users to quickly clean their email lists and ensure they are up to date. It is easy to use, the user interface is friendly, and it was implemented in less than a day. Proofy has great customer support, they replied and helped us.
