code: def epost(database, ids: List[str], webenv=False, api_key=False, email=False, **kwargs) -> Optional[EpostResult]:
      
      url = BASE_URL + f'epost.fcgi'
      id = ','.join(ids)
      url_params = f'db={database}&id={id}'
      url_params = check_webenv(webenv, url_params)
      url_params = check_api_key(api_key, url_params)
      url_params = check_email(email, url_params)
      resp = entrez_try_put_multiple_times(url, url_params, num_tries=3)
      time.sleep(.5)
      return parse_epost(resp.text)
docs: Post IDs using the Entrez ESearch API.
  
      Parameters
      ----------
      database : str
          Entez database to search.
      ids : list
          List of IDs to submit to the server.
      webenv : str
          An Entrez WebEnv to post ids to.
      api_key : str
          A users API key which allows more requests per second
      email : str
          A users email which is required if not using API.
  
      Returns
      -------
      requests.Response