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Verify addresses in any n8n workflow with an HTTP Request node, then branch on the result.

A Kawaa app for Zapier is on the way. Until then, verify emails in any Zap by calling our API from a Webhooks by Zapier step.

A Kawaa app for Make is on the way. Until then, verify emails in any scenario by calling our API from Make's HTTP module.

A plugin that checks email fields in Contact Form 7, WPForms, Gravity Forms and more. It is not in the WordPress plugin directory yet.

Verify contacts through our API as they are added or change, or check an exported list as a CSV and import the results.

Verify leads and contacts through our API from a Flow or your own middleware, or check a Data Loader export as a CSV.

Get a signed HTTP callback when a bulk job finishes or your credits run low, so your own systems can act on it.

Verify single addresses or whole lists from your own code. Python and Node.js install from their package registries; the other SDKs are available as source.

Validate customer emails from your server. Reduce failed order notifications and improve customer communication.

Check an exported audience as a CSV before you send, or verify new subscribers through our API as they join.

Check an exported list as a CSV and segment profiles by the result, or verify new profiles through our API.

Verify contacts through our API as they enter an automation, or check an exported list as a CSV.