The bulk upload endpoint allows you to validate large email lists.
Only one bulk validation job can run at a time per account.
- After uploading a file, validation starts automatically.
- If a job is already running, any new upload will be queued and processed afterward.
File Hosting Requirements
To use this endpoint, you must:
- Upload the file to your own server
- Provide the public HTTPS URL to the file
- Ensure the URL ends with
.csv or .txt
Public file-sharing services (Google Drive, Dropbox, OneDrive, etc.) are not supported.
Only direct-file URLs hosted on your own server can be processed.
File Requirements
Your uploaded file must meet these conditions:
- File size less than 20MB
- Maximum 200,000 emails per list
- File type:
.csv or .txt
- One email per line
If your list exceeds the limit, split it into multiple files and upload them one by one.
API key for authentication
URL of your .csv or .txt email list, starting with https and uploaded in your server.
Bulk upload accepted and processing started
Whether the upload was successful