Kevin Hollinrake said that three price rises for first class stamps since April last year are making the public avoid sending letters and greeting cards.
Thousands of Brits have turned to the small doorbell cameras devices that can be easily bought online for as little as £59.99 - and police say they are vital in preventing and solving crime.
It puts a strain on us : Royal Mail strikes squeezing small businesses this Christmas itv.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from itv.com Daily Mail and Mail on Sunday newspapers.