InboxVet

InboxVet is an email verification tool that tells you whether an address is real before you send to it. Every check runs in real time and covers five layers:

• Syntax: catches typos and badly formatted addresses

• Domain, MX and DNS: confirms the domain exists and has mail servers

• Disposable detection: flags throwaway inboxes from temporary-email services

• SMTP mailbox verification: asks the receiving mail server whether the mailbox exists, without sending an email

• Catch-all detection: tells you when a domain accepts every address, so a mailbox can’t be confirmed

Pricing is built for how people actually verify: in bursts, not every month. Credits are pay-as-you-go, never expire, and there is no subscription or auto-renewal. New accounts get 100 free credits, and packs start at $25 for 5,000 checks.