Earlier in May, the Duke and Duchess of Sussex had welcomed their first son into the world. Archie Harrison Mountbatten-Windsor was born on May 5. Since then, the Duke and Duchess have been stormed with hundreds of letters and cards from well-wishers and fans who congratulated them on the birth of their son.

Considering the huge influx of these missives, it does not come as a surprise that their staff is only getting around to sending back responses to the senders.

And it seems that those who have received the royal parents' reply are more than ecstatic. Bradley Donovan-Baird, a fan of the Sussex family, recently received a thank you card from the couple. The excited fan took to his Instagram to upload a photo of the thank you card he had found in his mail earlier that day.

His post featured the postcard he had gotten of the family which had been taken soon after the birth of the baby.

The picture on the front was of Prince Harry beaming with happiness and pride while holding his newborn son, Archie Harrison, and alongside was his lovely wife, Meghan Markle, who was sporting a white dress with a healthy glow after only two days of giving birth.

The photo was a candid shot of the new little family as they were making their way to their scheduled official photocall at the St. Goerge's Hall in Windsor Castle. Their son's name was officially announced to the public after the said photo call.

And moments after, one of the officially released pictures as well as Archie's name, was posted on the couple's joint and official Instagram account, effectively announcing to the whole world that they had welcomed a healthy newborn son.

Behind the stunning postcard, there was a personal message from the Duke and Duchess of Sussex themselves. The message conveyed the gratitude the new parents felt for the time these fans had spent on writing to them to congratulate them on the birth of Archie and the well wishes for his good health and wellbeing.

The message also showed how touched Prince Harry, and Meghan were for the amount of love and support poured out for their little family at such a joyful time in their lives. The short message then concluded with how the Duke and Duchess send their best wishes along with their heartfelt thanks for their fan's touching gesture.

The royal family usually send thank-you cards to well-wishers and fans who have reached out to them during birthdays, wedding anniversaries, or, in this case, christenings. And it sure seems that this couple have outdone themselves with this stunning thank-you card.

Archie was recently christened in a very intimate and private ceremony at a renowned chapel. There were reportedly only 25 guests who were invited to attend. Fans can be sure to look forward to another thank you card for well wishes and congratulations on this recent occasion.