The Email Address Validation API provides detailed information about the validity of email addresses, which helps you create and maintain contact lists and reduce bounce rates.
The Bulk Email Address Validation API facilitates the asynchronous validation of up to one million email addresses.
With the Bulk Email Address Validation API, you can:
Request an upload URL for the email list you wish to verify.
This endpoint returns a presigned URL and request headers. Use this information to upload a list of email addresses for verification.
Note that in a successful response the content-type header value matches the provided file_type parameter in the PUT request.
Once you have an upload_uri and the upload_headers, you're ready to upload your email address list for verification. For the expected format of the email address list and a sample upload request, see the Bulk Email Address Validation Overview page.