code: def _retrieve_channel_id(email, profile='telemetry'):
      '''
      Given an email address, checks the local
      cache if corresponding email address: channel_id
      mapping exists
  
      email
          Email escalation policy
      profile
          A dict of telemetry config information.
      '''
      key = "telemetry.channels"
      auth = _auth(profile=profile)
  
      if key not in __context__:
          get_url = _get_telemetry_base(profile) + "/notification-channels?_type=EmailNotificationChannel"
          response = requests.get(get_url, headers=auth)
  
          if response.status_code == 200:
              cache_result = {}
              for index, alert in enumerate(response.json()):
                  cache_result[alert.get('email')] = alert.get('_id', 'false')
  
              __context__[key] = cache_result
  
      return __context__[key].get(email, Falsef _retrieve_channel_id(email, profile='telemetry'):
      '''
      Given an email address, checks the local
      cache if corresponding email address: channel_id
      mapping exists
  
      email
          Email escalation policy
      profile
          A dict of telemetry config information.
      '''
      key = "telemetry.channels"
      auth = _auth(profile=profile)
  
      if key not in __context__:
          get_url = _get_telemetry_base(profile) + "/notification-channels?_type=EmailNotificationChannel"
          response = requests.get(get_url, headers=auth)
  
          if response.status_code == 200:
              cache_result = {}
              for index, alert in enumerate(response.json()):
                  cache_result[alert.get('email')] = alert.get('_id', 'false')
  
              __context__[key] = cache_result
  
      return __context__[key].get(email, False)
docs: Given an email address, checks the local
      cache if corresponding email address: channel_id
      mapping exists
  
      email
          Email escalation policy
      profile
          A dict of telemetry config information.