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Integrations

Verify contacts from the tools you already use

Import a HubSpot list, follow a guide for your sending tool, or build verification into your own product with the API.

Build your own

Connect anything with the REST API

Single, batch and bulk endpoints that return the same fields.

GET /single

Real-time checks

One address, answered in seconds. Built for sign-up forms and lead capture.

Docs
POST /batch

Small lists

Send a list in one request. Slow servers come back as processing and finish on their own.

Docs
POST /bulk

Big files

Upload a CSV, check the job's status and download the results when it finishes.

Docs

FAQ

Integration questions

What people ask before they connect.

HubSpot (read-only: import a list and verify it), the REST API, signed webhooks, and CSV upload from any tool. Mailchimp, Zapier, Make and GoHighLevel are coming soon.

Still have a question? Talk to us.

Check your list before you send it

Start with 200 free credits. Pay per credit after that.