Send a Fax

POST

/api/faxes/send

Required Scope: faxes:write

Send a fax with a document attachment. Multipart form upload: attach the document as file and provide one or more recipient numbers in to (E.164). PDF, TIFF, PNG, JPEG, GIF, and BMP are supported (max 25 MB).

Example Request

curl -X POST https://api.eldonfax.com/api/faxes/send \
  -H "Authorization: Bearer sk_live_xxx" \
  -F "to=+15551234567" \
  -F "file=@invoice.pdf"

Example Response

{
  "success": true,
  "message": "Fax queued",
  "responseObject": {
    "id": "fax_abc123",
    "status": "QUEUED",
    "to": "+15551234567",
    "direction": "OUTBOUND"
  }
}