File
Upload by url
File
Upload by url
Verifies one or multiple emails in a file by your url
POST
The file creation endpoint allows you to verify multiple emails at once by creating a task to process the file asynchronously. Verification results are not included in the response.
File upload recommendation
Your file_url must be public – ensure that the source you provide is accessible to everyone.
For efficiency and deduplication, submit data in a single task rather than splitting it. For example, submit one file with 50k emails instead of 10 files of 5k each. If using data from a CRM, buffer it locally before submission.
Size limiting
The Bulk API supports files up to 65 MB.