code: @SuppressWarnings({"unused", "WeakerAccess"})
      public void initializeInbox(){
          if(getConfig().isAnalyticsOnly()){
              getConfigLogger().debug(getAccountId(),"Instance is analytics only, not initializing Notification Inbox");
              return;
          }
          postAsyncSafely("initializeInbox", new Runnable() {
              @Override
              public void run() {
                  _initializeInbox();
              }
          });
      }
docs: Initializes the inbox controller and sends a callback to the {@link CTInboxListener}
  This method needs to be called separately for each instance of {@link CleverTapAPI}