ListCleaner REST API

Email verification that belongs in your workflow.

Verify one address in real time or automate complete list-cleaning jobs with clear authentication, predictable JSON and live status endpoints.

Choose the right workflow

Real-time checks and complete lists.

Synchronous

Verify one email

Send one address and receive the verification status directly in the API response. This is suited to forms, sign-up flows and record review.

Single email documentation →
Asynchronous

Clean a complete list

Upload a supported file, store the returned job identifier, poll the status endpoint and download the finished result.

List cleaning documentation →
Start in your language

Real request examples, ready to adapt.

Select any language below. The email and API key remain visible so copied examples are complete.

A predictable integration

Built around the full request lifecycle.

1

Authenticate once per request

Use the account email and API key headers shown in every documentation example.

2

Handle structured JSON

Responses provide concise machine-readable fields for success, status and request identification.

3

Monitor list jobs

Use the cleaning status endpoint instead of keeping an upload request open while a large list is processed.

Build with verified email data.

Open the interactive documentation and execute requests against the API.

View API docs →
News & insights

The latest from ListCleaner.

New analysis and practical guidance, published automatically as soon as it is ready.

View all news →