The Queen is said to be comforted by the public’s support in the wake of Harry and Meghan’s interview with Oprah Winfrey.
Sources say sacks full of letters, cards and gifts are delivered to Windsor Castle every day.
The monarch is reportedly pleased to receive messages of support after Harry and Meghan accused an unnamed member of the Royal Family of racism during their interview with Oprah.
Dame Mary Morrison, the Queen’s lady-in-waiting, is said to reply to every letter, the Mail on Sunday reports.
Some of the responses are said to be “personal”, with Dame Mary thanking supporters and adding the Queen appreciates their “kindness” following the interview.
During their interview with Oprah Winfrey, Prince Harry and his wife Meghan Markle said a member of the Royal Family made a comment about how dark Archie’s skin would be before he was born.
Meghan refused to say who the conversations had been with, saying it would be “very damaging to them”, but said it happened numerous times.
She said: “In those months when I was pregnant, we had in tandem the conversations of him not being given security or a title, and also concerns about how dark his skin might be when he’s born.
“They didn’t want him to be a prince or princess, not knowing what the gender would be, which would be different from protocol and that he wasn’t going to receive security.”
When he joined the interview later, Harry said he would never reveal details of the conversations.
After their chat with the TV host, the Duke of Sussex told Oprah that it was not The Queen or Prince Philip who made the racist comment.
Speaking on CBS after the interview, Oprah said: “He did not share the identity with me but he wanted to make sure I knew, and if I had an opportunity to share it, that it was not his grandmother or grandfather that were part of those conversations.
“He did not tell me who was a part of those conversations.”
When approached by journalists at the end of a visit to a school, Prince William denied racism inside the Royal Family.
Sky News reporter Inzamam Rashid asked if the Royal Family was a racist family, to which William replied: “We’re very much not a racist family.”
The day after the bombshell Oprah interview aired in the UK on March 8, the Palace issued a statement saying: “The whole family is saddened to learn the full extent of how challenging the last few years have been for Harry and Meghan.
“The issues raised, particularly that of race, are concerning. While some recollections may vary, they are taken very seriously and will be addressed by the family privately.
“Harry, Meghan and Archie will always be much-loved family members.”