Email Verifier

It checks the address syntax, confirms the domain has MX (mail) records, flags role and disposable addresses, and can optionally probe the mail server with an SMTP RCPT command to see if the mailbox is accepted.

Many mail servers deliberately accept all recipients (catch-all) or greylist unknown senders to prevent exactly this kind of probing. An inconclusive result does not mean the address is invalid.

A role address such as info@, support@ or admin@ belongs to a function rather than a person. They are valid but often unsuitable for marketing lists.

No. The optional probe only opens an SMTP conversation up to the RCPT step and then disconnects — no message is ever delivered.

A catch-all domain accepts mail for every possible address rather than only real mailboxes. Because the server accepts anything, verification cannot confirm whether a specific address truly exists.

A disposable address comes from a temporary or throwaway mail provider, often used to bypass sign-ups. They are technically valid but usually undesirable on a real mailing list, so the tool flags them.

Checking syntax, confirming the domain has MX records, and probing the mailbox catches many invalid or mistyped addresses before you send, which lowers your bounce rate and protects your sender reputation.

No. Correct syntax only means the address is well-formed. The mailbox may still not exist, which is why the tool also checks the domain MX records and can probe the server.