← GlossaryDefinition
What is Email verification API?
A programmatic endpoint that verifies an address in real time, usually at the point of capture.
An email verification API lets you check an address from your own code — typically the moment someone submits a form — and get back a status in real time. That stops bad addresses from entering your database in the first place, rather than cleaning them up later.
APIs are used for live form validation, signup gating and CRM integrations. The same engine that powers bulk list cleaning usually backs the API, so results are consistent whether you verify one address or a million.
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