More than 150,000 cards have been sent to Army veteran Captain Tom Moore, who celebrates his 100th birthday on Thursday.
On the eve of his centenary, hundreds of thousands of cards have been sent to him from across the world.
Captain Tom's grandson's school and an army of volunteers have been sorting and storing them for him in the school's dining hall.
Prep School Headmaster, Bedford School, Ian Silk said: "I think it's stunning, I think it's a symbol of a huge story, it's, I suppose, a symbol of all the good things about humanity. It's part of a bigger story which is the story of Captain Tom and how he's raising money for the NHS. And it is astounding".
"Captain Tom himself is just an absolute legend, to be honest, the way he's inspired and captured the whole nation. We've really needed it I think," Mandy Alison from Bedford School told Forces News.
"I've managed a lot of Christmas post and everything over the years, but this has gone through the roof", Bill Chandi, Postmaster Marston Moretaine, said.
The Second World War veteran raised nearly £30 million for the NHS by walking laps in his garden in Bedfordshire ahead of his birthday.
His initial £1,000 fundraising target was broken in around 24 hours and he has extended his challenge to 200 laps after he completed the first 100 laps, 14 days ahead of schedule.
In honour of the veteran's birthday, it has also been specially arranged for a flypast to take place.
The British Army veteran has also become the oldest ever person to have a UK number one single, with a rendition of 'You'll Never Walk Alone' with Michael Ball.
The song is one of the ways the war veteran has been raising money for NHS Charities Together to thank the "magnificent" staff who recently treated him for a broken hip and cancer.
All mail sent from 27 April has also been stamped with a special postmark to celebrate his birthday.
Cover image: Captain Moore's grandson's school dining hall is being used by volunteers as a hub to sort and store the hundreds of thousands of birthday cards he received for his centenary.