curl --request POST \
  --url https://api.coldsend.pro/api/public/v1/sender-accounts/coldsend-native/bulk \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '
{
  "domain_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "inboxes": [
    {
      "email_prefix": "<string>",
      "display_name": "<string>"
    }
  ]
}
'

{
  "success": true,
  "message": "<string>",
  "domain_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "domain_name": "<string>",
  "total": 123,
  "success_count": 123,
  "failed_count": 123,
  "skipped_count": 123,
  "results": [
    {
      "email_prefix": "<string>",
      "display_name": "<string>",
      "status": "<string>",
      "email_address": "<string>",
      "inbox_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "error_message": "<string>"
    }
  ]
}