Best letterbox cakes to send delicious treats to friends and loved ones

Best letterbox cakes - (Cutter & Squidge)

No need for a doorbell or a missed delivery slip. Letterbox cakes are thoughtful, delicious, and drama-free presents.

Gone are the days of stressful gift shopping or worrying about awkward delivery windows.

Whether it’s a forgotten birthday, a pick-me-up for a friend miles away, or just a random ‘thinking of you’ moment, letterbox cakes bring joy without the fuss.

You don’t have to fret about wrapping, delivery slots, or finding a gift that feels just right. With flavours to suit everyone and custom designs that feel personal, they do the hard work while you take the credit for being an absolute gifting legend.

Whether you’re hunting for festive indulgence, dietary-friendly delights, or a gift that feels perfectly personalised, the market for letterbox cakes, brownies, and biscuits has exploded.

With endless options now available, we’ve rounded up the best to make choosing easier. However, you may still find it hard to resist adding more than one to your basket.

Say it with cake

Sometimes, the joy lies in tasting a little bit of everything. Rachael's Kitchen Tasting Menu Cupcakes offers a perfectly portioned assortment designed to satisfy indecisive snackers.

Treats for plant-based pals have never looked better. The Vegan Brownie Selection from Simply Cake Co. ticks all the boxes for flavour, texture, and pure indulgence. Or, try The Little Vegan Doughnut Treat Box from The Goodness Project.

Meanwhile, Cake or Death’s Letterbox Brownies, are known for their bold flavours, while Bloom & Wild’s Festive Letterbox Brownies are a wintry wonder.

Or Marks & Spencer’s Colin the Caterpillar Letterbox Gift is a nostalgic nod for adults who grew up with the iconic cake.

Looking to send a treat with a thoughtful touch? Postcake lets you design your very own edible message, which is ideal for birthdays, celebrations, or just because.

No nuts? No problem! Cutter & Squidge offers a Nut-Free Mixed Mini Brownie Box that’s just as indulgent as their regular range. For wheat-free and vegan diets, their Vegan Wheat-Free Mini Brownie Box is the perfect answer to dietary restrictions.

For those who like their treats extra fancy, Macarons Gift Box Mixed Pack by Patisserie Valerie is an opulent way to enjoy macarons in every shade.

Whether you’re indulging yourself or sending a gift, one thing’s for sure, there’s never been a better time to let the postman deliver the joy.

Best letterbox cakes at a glance

Find out more below

Patisserie Valerie’s Chocolate Fudge Brownies

This beautifully packaged gift box contains 12 indulgent brownies, with a variety of three irresistible flavours.

Delivered nationwide, this gift box is an ideal surprise for loved ones, making it a luxurious treat to share or savour on your own. The gorgeous presentation and deliciously crafted brownies ensure this box is a standout choice for postal dessert gifts.

The Double Chocolate Brownie delivers a rich, fudgy texture topped with dark chocolate and finished with a decorative white chocolate leaf.

For those who love a touch of savoury, the Salted Caramel Brownie offers a velvety salted caramel layer topped with dark chocolate.

Then there’s the Cherry Brownie combines the perfect balance of tart and sweet, featuring cherries and a cherry-infused white chocolate drizzle.

Buy now £17.95, Patisserie Valerie

M&S Millionaire's Shortbread and 3 Salted Caramel Chocolate Tiffin Letterbox Gift

Paying homage to my Scottish roots, I have to give this luxury spin on traditional shortbread and rich chocolate tiffin a special mention.

Featuring three pieces of all-butter Millionaire’s Shortbread, each topped with a thick layer of caramel and milk chocolate drizzle, and three biscuit tiffins bound in a dark chocolate mixture, finished with salted caramel and a ripple of milk chocolate.

Handcrafted in small batches to maintain that homemade taste, treats offer the perfect combination of crumbly shortbread and smooth chocolatey richness. Ideal for sharing or enjoying solo, this indulgent gift box arrives with free nominated day delivery and is suitable for vegetarians.

Enjoy these fresh - meaning they should last a minimum of three days upon receipt.

Buy now £20.00, M&S

Cutter & Squidge Sent with Love Mixed Mini Brownie Box

This is the ultimate treat for brownie lovers. Packed with six indulgent flavours, including gooey salted caramel, rich Nutella, and decadent millionaire shortbread, this selection caters to every craving. Each bite-sized brownie is lovingly handmade with premium ingredients, ensuring a perfect balance of flavour and texture in every square.

The "Sent With Love" sleeve adds a personal, heartfelt touch, making it ideal for any occasion, whether you're celebrating, thanking, or simply showing someone you care. Delivered nationwide, these 100 per cent vegetarian and halal-friendly brownies are a thoughtful way to spread joy.

Buy now £21.99, Cutter & Squidge

Letterbox Gifts Christmas Letterbox Brownies

Celebrate the season with a delicious box of vegan Christmas brownies, perfect for spreading festive cheer. This set includes eight indulgent brownies in seasonal flavours: Gingerbread, Sprinkles, Chocolate Orange and Cherry Bakewell. Each brownie is freshly made to offer a rich, festive taste that’s sure to impress.

Delivered through the letterbox with a complimentary Merry Christmas greetings card, this gift box is an easy yet thoughtful way to treat loved ones or indulge yourself. Best enjoyed fresh from the fridge, the brownies are conveniently packaged for ultimate enjoyment.

With free UK delivery and the option to personalise your greeting card, this festive box is the ideal way to send warm wishes, all while catering to vegan preferences. Delivered the next working day, it’s the perfect gift for those who appreciate a little extra sweetness this Christmas.

Buy now £29.00, Letterbox Gifts

Patisserie Valerie Cake Bites Gift Box

Indulge in the perfect balance of luxury and convenience with these cake bites. Each one is crafted from Patisserie Valerie’s finest sponge, delicately hand-rolled with rich buttercream and encased in a decadent chocolate coating. Finished with an artisanal drizzle, these bite-sized treats are as beautiful as they are delicious.

Perfect for sharing or savouring solo, this box of 12 is ideal for any occasion from afternoon tea to gifting moments of joy. Alcohol-free, vegetarian, and halal-friendly, they cater to a variety of preferences without compromising on indulgence. With next-day delivery available nationwide, they’re a thoughtful and elegant way to treat yourself or surprise someone special.

Buy now £19.95, Patisserie Valerie

Positive Bake's Vegan Citrus Tart Taster Gift Box

Indulge in a luxurious selection of four handmade, vegan and gluten-free citrus tarts, perfect for gifting or treating yourself. This sharing box includes a delightful variety of zesty, refreshing tarts crafted with care in Positive Bake's own bakery, designed to satisfy any sweet tooth with fresh flavour.

Ideal for birthdays, baby showers, or simply as a thoughtful 'thank you' gesture, these tarts are a gourmet delight that will impress. To make the gift even more personal, you can include a free, customised gift message to add that special touch.

Buy now £19.50, The Goodness Project

Letterbox Gifts Christmas Letterbox Macarons

Experience the festive delight of 15 fresh, hand-crafted Christmas macarons delivered right to your door. This beautiful gift box features a selection of limited edition flavours, including Mince Pie, Chestnut and Pear, and Caramel Gingerbread, offering a unique twist on holiday favourites.

Perfect for spreading Christmas cheer, the box also includes a complimentary Christmas greetings card, and with free UK delivery, it’s an easy way to share the joy of the season.

Buy now £28.00, Letterbox Gifts

Bloom & Wild The Festive Letterbox Brownies

These indulgent, ultra-fudgy brownies offer the perfect festive treat for anyone in need of a sweet escape. Handmade in Gloucestershire using responsibly sourced cocoa, each brownie is topped with a layer of milk chocolate and a sprinkle of white chocolate stars for an extra touch of sweetness.

Packaged in a beautifully recyclable gift box, this set includes six gluten-free dark chocolate brownies. While they’re best enjoyed within five days, the irresistible taste may have them gone long before then.

Buy now £22.00, Bloom & Wild

Planet Doughnut The Little Vegan Doughnut Treat Box

This assortment of 12 bite-sized vegan doughnuts from Planet Doughnut is perfectly crafted for those embracing a plant-based lifestyle. This box offers a mini selection of flavours, ideal for sharing or enjoying solo. A thoughtful gift for anyone who loves to explore new vegan treats.

For the best experience, enjoy your doughnuts on the day of delivery. They stay fresh for up to 48 hours when stored in a cool, dry place.

Buy now £32.99, The Goodness Project

M&S Brownie & Blondie Mini Selection Letterbox Gift

If you know an indecisive sweet tooth, then this is the box for them.

Each brownie base is made with 70 per cent cocoa dark chocolate, while the blondies feature a creamy white chocolate base, both cooked traditionally to create a caramelised crust and soft, gooey centre.

These treats are crafted in small batches to preserve the homemade taste, offering a crisp, crackly top and fudgy interior with just the right amount of chewiness or gooeyness.

Guaranteed to last a minimum of three days upon receipt, but with their delicious taste, they likely won’t last that long.

Buy now £20.00, M&S

Simply Cake Co Stuffed Cookie Selection

Simply Cake Co.'s Stuffed Cookie Selection is a perfect treat for any occasion. This gift box features three all-butter cookies, each stuffed with decadent fillings including Caramel, Kinderella and Nutella.

These handmade cookies are crafted in the UK with high-quality ingredients such as proper butter, free-range eggs, Belgian chocolate, and gluten-free flour, making them suitable for a wider audience.

Enjoy them straight away or heat them up for a gooey, melt-in-the-middle experience that's even more heavenly when paired with ice cream. Fresh for up to two weeks if stored properly, these cookies bring the perfect balance of sweetness and richness.

Buy now £10.99, Scribbler

Chummy’s Bakery Mixed Box of Postal Blondies

With a range of six irresistible flavours, such as Jammie Dodger, Custard Cream, Malteasers, Lemon & Blueberry, Kinder, and Twix & Rolo, this mix-and-match box allows you to customise your delivery, ensuring every sweet craving is satisfied.

Each box is handmade in the UK, ensuring top-quality, fresh ingredients in every bite. Whether you're gifting for a birthday, sending a thoughtful surprise, or rewarding someone special, these blondies are beautifully packaged in eco-friendly materials, with protective wrapping to guarantee freshness.

The postal service ensures next-day delivery for orders placed before noon, with a shelf life of up to two weeks.

Buy now £19.95, Chummy’s Bakery

Fitzbillies Chocolate and Salted Caramel Buns

Crafted using a recipe perfected since 1920, these buns bring a rich heritage of baking expertise to your doorstep. This modern twist on the classic Chelsea bun combines soft, ultra-sticky dough with layers of decadent salted caramel and chocolate, creating a luxurious flavour profile.

The addition of a pot of silky salted caramel elevates the experience, letting you customise the gooey goodness. Whether enjoyed cold or warmed for a fresh-from-the-oven feel, these buns deliver a bakery-standard indulgence in every bite.

Buy now £21.00, Fitzbillies

M&S Colin the Caterpillar Letterbox Gift

Designed to deliver a little joy straight to their door, this box brims with Colin’s beloved treats, including mini Colin cakes, Colin speckles, rainbow fruit gums, sours, and softies.

Each bite is a celebration of fun flavours that are sure to delight kids and adults alike.

The variety of treats ensures there’s something to satisfy every sweet craving, making it a thoughtful gesture for birthdays, celebrations, or simply to say "thinking of you”.

Buy now £20.00, M&S

Verdict

Patisserie Valerie’s Chocolate Fudge Brownies are the top pick for the best letterbox cake box due to their quality, variety and indulgence.

Each box contains a selection of three flavours - Double Chocolate, Cherry, and Salted Caramel - ensuring there’s something for every chocolate cake lover.

The brownies are rich, fudgy, and perfectly balanced, with a luxurious finish. Their premium presentation in a beautifully designed gift box makes them an ideal treat, and the nationwide delivery means that no matter the occasion, these brownies arrive fresh.