Letterbox Gift Ideas: Thank You and Get Well Soon by Post

Letterbox gift ideas are the quiet heroes of thoughtful people: a slim box of proper baking that drops onto the doormat with the day's letters, so nobody has to wait in or sign for it. At Sploffin, a box of six brownies, six cookies or four thick slices of loaf cake is £18, baked to order in my registered home kitchen in Peterborough. It goes Royal Mail 1st Class as a large letter for £3.60, and the handwritten card inside is free. This guide matches the right box to the moment: thank yous, get well soons, sympathy, new babies, Mother's Day, birthdays and the office, with how fresh it arrives and how to send one.

I bake alone, in small batches, from generational recipes. My gran fed every family occasion going, and I learned early that the right bake at the right moment says more than a long message ever could. A letterbox box is that idea, folded flat and sent through the post.

Already know who it is for? Head to my letterbox gifts, choose the box, write the card and book the day you would like it to arrive: any Tuesday to Friday between three days and a year from now, posted by Royal Mail 1st Class or DPD next day.

What makes a good letterbox gift?

A good letterbox gift fits through a standard letterbox, survives the journey, keeps for a few days, and feels personal when it lands. That rules out anything delicate, chilled or tall, and rules in dense, sturdy bakes packed flat: brownies, cookies and thick slices of loaf cake.

The size is the whole design brief. A Royal Mail Large Letter can measure no more than 35.3cm by 25cm, no thicker than 2.5cm, and weigh no more than 750g, and every box I send that way is built inside those numbers. Anything bigger needs somebody in: when a parcel will not fit and nobody answers, Royal Mail makes a second attempt the next working day, and if that fails too, leaves a 'Something for you' card. A present waiting at the depot is a present half delivered.

The food has to suit the post as well. Royal Mail counts biscuits as non-perishable food in its sending guidance, which is why dense bakes with nothing soft on top travel so well. Fresh cream, buttercream and fragile icing stay at home.

(the best letterbox gifts are like the best guests: they arrive on time and never need a lift home)

Which letterbox gift ideas suit each occasion?

The best letterbox gift ideas match the box to the moment and the person: brownies say celebration, cookies say cheer, and thick slices of loaf cake say comfort. For someone you cannot read, the treats box mixes a little of each.

My letterbox brownies are £18 for six, in six kinds, or £32 for twelve. My letterbox cookies are £18 for six, in five kinds, or £34 for twelve. The lemon loaf cake and the banana bread are four thick slices each, £18 a box, and there are walnuts in the banana bread. The baker's choice treats box is £18 too, and mixes brownies, cake slices and cookies. The dozens are too heavy for a large letter, so they travel as small parcels; every other box here is built for the slot.

In short: brownies or cookies for thank yous and celebrations, the softer loaf slices for get well soons and sympathy, anything one-handed for new parents, and the treats box for the person who is impossible to buy for. The sections below go occasion by occasion, but the person always outranks the guide.

Thank you gifts by post UK: what should you send?

The best thank you gifts by post are generous enough to share and easy to enjoy straight away: a Sploffin box of six letterbox brownies or six letterbox cookies, £18 plus £3.60 Royal Mail postage, suits teachers, neighbours, hosts and colleagues. Write a specific line on the card, because "thank you for feeding the cat for a fortnight" lands better than "thanks".

Thank you gifts by post have one big advantage over flowers: they do not need a vase, a sunny windowsill or anybody to be home. A teacher at the end of term gets a box to take to the staffroom. A neighbour who took in a dozen parcels gets something better than a note through the door. A host who fed you all weekend gets a slower, sweeter thank you a few days later, when the washing up is finally done.

For a whole team, the dozen goes further: twelve brownies or twelve cookies travel as a Royal Mail small parcel and feed a staffroom or an office kitchen. And if you are thanking several people, each gets their own order and their own card, so nobody opens somebody else's message.

(a thank you that can be eaten is a thank you that gets remembered, briefly but intensely)

Get well soon gifts by post: what is kind to send?

A good get well soon gift by post is gentle, easy to eat and asks nothing of the person receiving it. Four thick slices of my lemon loaf or banana bread, £18 a box, suit a slow afternoon on the sofa, and because the box comes through the letterbox, nobody has to get up to answer the door.

Think about the person before the bake. Someone recovering may not want anything too rich, so the lemon loaf is often the kindest choice: bright, light and not too sweet. If they are cooking for one, or not cooking at all, four slices in a slim box are easier than a whole cake to finish. Brownies suit the recovering chocolate lover, and you will know if that is them.

If they are in hospital, ask the ward before you send anything, because the NHS says many hospitals do not allow flowers on the wards, and you may not be allowed to bring some foods in. Often the kinder plan is to send the box home: book a Tuesday to Friday just after they are due back, so it is waiting on the mat when they walk through the door.

If they have an allergy or a medical diet, check first. My kitchen handles all 14 major allergens, nuts included, so I cannot promise any bake is free of traces. The banana bread contains walnuts and the butter pecan cookies contain pecans. None of my letterbox boxes is sold as gluten free, and the vegan versions for the post are still being worked out, so for a coeliac or vegan friend these are not the right boxes yet. Buying food online should never mean guessing: the rules say allergen information must be there before you pay and again when the order reaches the door, and every box carries its full ingredient label. My allergen information page is the place to start.

What is a thoughtful sympathy gift to send by post?

A sympathy gift by post should be simple and practical: something the household can share with visitors or eat without thinking, with a short, warm message. Loaf cake slices or a box of brownies quietly do that, and arrive without a knock at the door.

When somebody is grieving, the house often fills with people and nobody remembers to eat. A slim box that lands with the post, with nothing to arrange and nothing to reply to, is a small kindness that asks for nothing back. Keep the card short: "Thinking of you" with your name says enough. The checkout offers it as a one-tap start, for the moments when words are hardest to find.

There is never a price or an invoice inside a gift, so the person opening it sees your words and the baking, and nothing else.

What are good new baby, new home and congratulations gifts by post?

For new parents, send something they can eat with one hand at three in the morning: cookies or brownies win. For a new home, a box of slices welcomes them before the kettle is even unpacked. For an exam result or a new job, brownies are the celebration.

New parents are the people who most need feeding and are least able to go to the door, which makes a letterbox box ideal. Cookies are the one-handed snack of choice. If they are breastfeeding and avoiding anything in particular, ask before you choose.

For a new home, the slim box gets through even when the doorbell has not been wired up yet. For a congratulations, the box of six brownies feels like a party in a postbag.

When should Mother's Day and Father's Day letterbox gifts arrive?

For Mother's Day or Father's Day, book the box to arrive on the Friday before, because I post for Tuesday to Friday arrival and both days fall on a Sunday. Book it as soon as you know the date, since arrival days can be booked up to a year ahead, and a box that lands on Friday gets eaten all weekend.

Pick by the parent rather than the occasion. For the mum who claims she does not want anything, the lemon loaf. For the dad who has everything, a dozen cookies he will not have to share unless he wants to; the dozen travels as a small parcel, not a large letter. The card is where the personality goes, so take a minute over it.

Can a letterbox birthday gift arrive on the day?

Usually, yes: for a birthday you cannot get to, book a Tuesday to Friday on or just before the day, add a birthday message, and I post it in good time for that date. Brownies or cookies suit most people; my guide to the letterbox birthday cake covers the slices of cake option.

You can book up to a year ahead, which means a whole year of family birthdays can be sorted in one sitting. Royal Mail 1st Class aims to deliver the next working day, Saturdays included, so with Royal Mail the date you pick is my aim and the final stretch is theirs. For a date that matters, book a day early, or choose DPD next day at checkout, which brings it on the day you pick.

How do corporate thank you gifts by post work?

For client and staff thank yous, letterbox gifts are tidy: one box per person, a handwritten card in each, posted to home addresses anywhere in the UK. For a list, send me a message with each address and the box you want sent there, and I will quote the lot together.

HMRC lets a small present for staff count as a trivial benefit, with no tax to pay, when it costs £50 or less, is not money or a voucher that swaps for cash, is not a reward for their work and is not written into their contract. That suits a box sent for a new baby or a bereavement, and a box of six with its postage comes to £21.60. A thank you for a job well done is different: HMRC's own manual says a benefit given as a thank-you for good results in the year will not qualify, so your accountant gets the final word.

For staff birthdays, the Birthday Book takes one payment for the year, then sends each person a box and a card to land on or just before their birthday.

What should I write on a letterbox gift card?

Keep it short, specific and in your own voice: one line about them, one line from you. The card holds up to 300 characters, written out by hand, and the checkout offers one-tap starts for Happy birthday, Thank you, Thinking of you, Get well soon and Congratulations.

Specific beats eloquent every time. For a thank you, name the thing: "Thank you for the lifts all term, the kids say you are the fun parent." For a get well soon, keep it light: "Doctor's orders: one slice with every cup of tea." For sympathy, say less: "Thinking of you all, with love." For a new baby: "For the three in the morning feeds. Congratulations, all of you." For a birthday you are missing: "Sorry I cannot be there, so the cake came instead."

Sign it the way you would sign a card at home, because it will be read the same way. And if a blank card makes you freeze, the one-tap starts are there to be finished in your own words.

When the words are ready, choose the box on my letterbox gifts page, type your message at checkout and book the Tuesday to Friday you would like it to land. I bake it for that date, write the card by hand and post it.

How much does a letterbox gift cost to send?

A Sploffin letterbox gift costs £21.60 to send anywhere in the UK: £18 for six brownies, six cookies, four slices of loaf cake or the treats box, plus £3.60 for Royal Mail 1st Class as a large letter, and the handwritten card costs nothing. The dozens go as small parcels, and the checkout shows that postage.

By Royal Mail, every box pays its own postage, because each one is posted separately. DPD next day packs everything for one address into a single courier box priced by weight, so several boxes for one person can work out cheaper that way. Enter a postcode and the checkout lists both carriers side by side, with the cheaper one already selected. Join my list and you get 10% off the bakes on your first order.

How fresh does a letterbox gift arrive, and how long does it last?

Sploffin's letterbox bakes stay at their best within five days of arriving, and the best-before date printed on each label has the final say. I bake each box for its order and post it for its date, so it arrives fresh. No fridge needed: keep the box closed, somewhere cool and dry.

That is the point of choosing dense bakes for the post. Brownies and loaf cake hold their moisture, and many people swear they taste better on day two. Cookies keep well in an airtight tin. Keep them all off the sunny windowsill, however fond the box seems of the view.

Can I get a letterbox gift delivered next day?

Yes, for a date you have booked. Pick DPD next day at checkout and an arrival day from Tuesday to Friday, three or more days away, and I hand the box to DPD the day before, so its next-day service brings it on that date. That covers the UK mainland apart from parts of the Highlands, which go by Royal Mail instead. By DPD the slim box travels inside a courier parcel, so it comes to the door rather than through the letterbox. Same day is not possible, because every box is baked to order for the day it travels.

Royal Mail 1st Class is the cheaper choice for a box that fits the letterbox, and it reaches anywhere in the UK. My guide to cookies delivered UK-wide explains how next day really works, and my guide to letterbox cakes by post covers what travels best. For chocolate people, letterbox brownies by post has its own guide.

Sending something in December? The Christmas menu takes orders until 18 December, the festive boxes are in my guide to letterbox Christmas gifts, and the rum-soaked Christmas fruit cake gets a guide all to itself.

How do I send a letterbox gift from Sploffin?

A few minutes, start to finish. Open my letterbox gifts, pick the box and flavours, add their address, choose an arrival day from Tuesday to Friday, write the words for the handwritten card, and pay through Stripe's secure checkout. Then I bake it for your date, pack it flat, label it and send it on its way. With Royal Mail your date is my aim and the last mile is theirs; with DPD it is the day it arrives.

The best letterbox gift ideas are the ones that feel like you thought of them, which you did. Choose the box, write the card, and let the post do the rest.

Written by Sploffin, a small-batch bakery in Peterborough. Questions about an order? The FAQ answers most of them.