Validating a handful of emails through the API is straightforward — but what about validating thousands at once? Now you can.
The new Bulk CSV Validation API lets you upload an entire CSV file of email addresses and get back validated results in one go. Upload your file, check back on progress, and download the results when it's done.
How it works:
Upload — POST /v1/email/validate-file to create a validation job with your CSV
Track — GET /v1/email/validate-file/{jobId} to monitor progress
Download — GET /v1/email/validate-file/{jobId}/download to grab your results
Files up to 100 MB are supported, with automatic delimiter and header detection so you don't need to worry about formatting. You can also provide a webhook URL to get notified the moment processing completes — no polling required.
Read the full walkthrough in our docs →