send-mms-params

record send-mms-params {
  body: string,
  country: option​<string>,
  custom-string: option​<string>,
  from-op: option​<string>,
  from-email: option​<string>,
  list-id: option​<f64>,
  media-file: string,
  schedule: option​<f64>,
  source: option​<string>,
  subject: string,
  to: string,
}