(Reuters) -The CEO of Dutch mail company PostNL on Monday said business is suffering from high inflation and low consumer confidence, leading to fewer packages being sent. The company, which was reporting third-quarter earnings that confirmed an October profit warning, said the macroeconomic background is becoming increasingly difficult. “It has clearly impacted consumer spending,” Herna Verhagen said in a statement. “Retail shops as well as web shops are now signalling that their stocks are growing.” The group, which delivers parcels and letters across Belgium, the Netherlands and Luxembourg,…