Birthday Gift Ideas

Finding the right birthday gift isn't always easy — especially when you want something that's thoughtful, personal and easy to send. Our birthday letterbox gifts are designed make birthday gifting easier, with carefully chosen birthday gift ideas that arrive straight through the letterbox and feel genuinely considered. Whether you're planning ahead or sending a last-minute birthday surprise, these letterbox-friendly birthday gifts make it easy to let someone know you're thinking of them on their birthday.

Order before 2pm for same day dispatch Mon - Fri | Order before 10AM Saturday

Free Postage on all orders

59 products

£24.95 GBP

Squeeze The Day Gift Box

£23.95 GBP

You’re One In A Melon Letterbox Gift

£19.95 GBP

Lemons Letterbox Gift

£26.95 GBP

Let Them Gift Box

£19.95 GBP

Matcha Hug Gift Box

£34.95 GBP

Sweet 16 | Birthday Treatbox

£34.95 GBP

Cheers to 18 years | Birthday Treatbox

£34.95 GBP

21 Today | Birthday Treatbox

£34.95 GBP

Hello 30 | Birthday Treatbox

£34.95 GBP

Fabulous at 40 | Birthday Treatbox

£26.95 GBP

Pretty Little Plans | Gift Box

Testimonials

"This was such a perfect gift, my friend absolutely loved receiving it through the post when she was having a rough time. We will be ordering again, Thanks so much."

Simon rated 5 stars

Simon

"Such a unique and beautiful gift for a friend's child who had just been diagnosed with type 1 diabetes. Thank You so much"

Claire rated 5 stars

Claire

"Such lovely items, Send a Smile was so helpful with my order. Will definitely be ordering more in the future."

Sharon rated 5 stars

Sharon

"Amazing, fast delivery, so cute. Thank You"

Mia rated 5 stars

Mia

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Birthday letterbox gifts that feel truly special

For a birthday gift to feel special, it doesn't need to be extravagant — it needs to feel chosen. Our handpicked collection of letterbox birthday gifts is bursting with feel-good treats, cosy moments and little luxuries that say "you matter." From chocolatey treats and sweet surprises to cosy comforts, everyday essentials and feel-good goodies, each Smile Box is designed to bring a little birthday joy through the letterbox.

Whether it's a birthday gift for your best friend, your partner, your mum, or just someone who deserves a thoughtful surprise on their birthday, our letterbox-friendly birthday gifts offer a simple way to mark the day in a memorable way. No wrapping, no chasing couriers and no worrying about timing — just a birthday surprise that arrives when it should, and leaves a last impression when it lands on their doormat.

Each birthday gift box can be personalised with your loved one's favourite goodies and a handwritten note — making it easy to send love and birthday wishes, even from afar. All of our birthday gifts are sent directly to the recipient, with free UK delivery as standard. That means no missed deliveries and no need to wait in — just a delightful birthday surprise popped straight through their door.

Our birthday letterbox gifts are perfect for:

Surprise birthday gifts sent by post
Last-minute gifts that don't feel last-minute
Birthday celebrations you're unable to attend in person
Sending something more meaningful than a birthday card
Thoughtful ways to make your loved one's birthday extra special
Romantic gifts for her and for him
Sending birthday love anywhere in the UK

If you're looking for birthday gift ideas that feel personal, are easy to send and are a genuine joy to receive, our birthday letterbox gifts are designed to do exactly that — because the best kind of birthday gift is the one that arrives with a smile.