Santa's Mailroom: sealing wax, seals, stationery and mailboxes
How to seal and send a letter that looks like it came from somewhere. What to look for in wax, paper, envelopes and mailboxes, and the mistakes that waste an evening.
By the North Pole Bureau · September 3, 2026
What the mailroom is for
A letter from Santa is believed or not believed in about four seconds, and almost none of that is the words. It is the weight of the paper, the seal on the back, and whether the envelope looks like something an adult made this afternoon.
The Bureau designed its own stationery and built the press that prints it, so choosing paper, wax and envelopes is work we have actually had to do. Below is what we learned choosing them, what to look for if you are buying your own, and the three mistakes that cost people an evening.
Wax, and the mistake nearly everyone makes
Hard traditional wax looks perfect on a desk and cracks in the post. Envelopes are bent, stacked and run through rollers, and brittle wax shatters into red crumbs somewhere in a sorting office. If the letter is being mailed, buy flexible wax. It bends instead of breaking, and nobody can tell the difference by looking.
The second mistake is heat. Wax that is too hot spreads thin and pale, and the stamp pushes straight through to the paper. Wax at the right temperature is thick and slow, like honey off a spoon. If you can see the paper through the puddle, wait longer before you press.
If you use a glue gun, use a low-temperature one and run it on its lowest setting. Sealing wax melts far cooler than glue does, so a high-temperature gun at around 380F both ruins the wax and burns considerably worse if it touches skin. That matters in a kitchen with a child helping.
The trick that makes the whole thing easy: rub a little ice on the face of the stamp, or leave it in the freezer between letters. A cold stamp lifts off cleanly every time. A warm one sticks, and you tear the seal getting it off.
Paper is the part people skip
Given a choice between better words on ordinary paper and ordinary words on heavy paper, heavy paper wins with a child every time. Weight is measured in pounds, and ordinary printer paper is about 20 lb bond. Move up to 28 or 32 lb bond and the sheet stops flopping. It holds its shape when a child holds it up, and it makes a small sound.
Buy it labelled bond or writing paper, not text weight. The two are measured on different sheet sizes, so 32 lb text is actually a thinner sheet than the copy paper you are trying to improve on. If the listing gives grams, 105 to 120 gsm is the range you want.
Cream rather than white, because white reads as a document and cream reads as a letter. Buy the envelopes at the same time so the two creams match.
One size note that catches people out. An A7 envelope is 5.25 by 7.25 inches and is made for a flat 5 by 7 card, not for a letter. A US Letter sheet folded in half comes out at 5.5 by 8.5, which needs an A9 envelope at 5.75 by 8.75, and A9 is sold with the same pointed flap. Fold the letter once, not into thirds, and it sits in an A9 with the wax centred on the point.
The mailbox does more than the letter
If you buy one thing from this page, buy the mailbox. A letter is one morning. A mailbox on the wall is a walk to the front door every day for a month, and the checking is the tradition. Children write back to it, leave drawings in it, and check it in the rain.
Put it somewhere they can reach without help. A box a child needs an adult to open is a box that gets opened once.
What we do not recommend
- Pre-printed Santa stationery with the message already on it. The border is usually fine. The typeface is usually not, and you cannot fix it.
- Self-adhesive foil seal stickers. They look like stickers, because they are stickers. Real wax is not much more work.
- Novelty stamp sets of ten designs. Shallow cuts, soft detail. One good head is better than ten thin ones and costs about the same.
If you would rather not do any of this
Reasonable. The Bureau prints on heavy cream stock, seals it, and posts it for $16.95, and you read every word of the letter before you pay for a thing. There is a guide to printing one at home if you want to do it yourself, and three real letters if you just want to see what comes back.
Wax and seals
The seal is the part a child touches first. These are the three decisions that decide whether it looks like an office did it.
A wax seal kit with a spoon and a burner
Usually $15 to $40
A kit is the right way to start because the parts have to match. The stamp head, the spoon and the wax all need to be sized for each other, and buying them separately is how people end up with a stamp too wide for the puddle they can melt. A starter kit gets you a working seal on the first evening.
Best for A first go, or a parent sealing more than about five letters.
Watch for Kits sold with tea lights and no spoon. Melting wax directly over a flame scorches it and the seal comes out brittle and dull.
Flexible glue-gun sealing wax sticks
Usually under $15
Traditional hard wax cracks in the post. Flexible wax bends slightly instead of shattering, which matters the moment an envelope goes through a sorting machine. If the letter is being posted rather than handed over, this is the wax to buy.
Best for Anything that actually goes in the mail.
Watch for Stick diameter. Most flexible wax is 11mm and fits a standard low-temperature glue gun. The 7mm sticks need a mini gun and the two are not interchangeable.
A single snowflake or initial seal stamp
Usually under $15
One good brass head beats a set of ten thin ones. Depth is what makes an impression read, and cheap stamps are cut shallow, so the design fills in as the wax cools. A snowflake or a plain initial stays legible even when your first few attempts are too hot.
Best for A mark you will use every year rather than a novelty.
Watch for Anything described as zinc alloy. It is lighter, the casting is softer, and it loses crisp detail faster with repeated use.
The Bureau does not carry shopping links yet, so these are recommendations only.
Paper and envelopes
Weight matters more than color, and the envelope flap matters more than either.
Heavy cream text-weight paper
Usually under $15
Weight is the whole trick. Ordinary printer paper is about 20 lb bond and it feels like a school newsletter no matter what is printed on it. Somewhere around 28 to 32 lb bond, which is about 105 to 120 gsm, the sheet gets a soft rattle when a child picks it up, and that is the sound of something that came from somewhere. Buy it as bond or writing paper, not text weight: the two are measured on different sheet sizes, and 32 lb text is a thinner sheet than the copy paper you are trying to beat.
Best for Printing a letter at home so it does not read as a printout.
Watch for Card stock. Above roughly 80 to 100 lb cover, about 220 to 270 gsm, many home printers start to struggle and laser printers give up sooner than inkjets. Check your own printer's manual feed spec before buying heavy stock, and remember heavy sheets do not fold into an envelope cleanly either.
Gummed or pointed-flap envelopes in a matching cream
Usually under $15
A pointed flap gives the wax somewhere to sit. Square-flap envelopes work, but the seal always looks slightly off-center because there is no point to center it on. Buy the envelopes at the same time as the paper so the creams match, because two different creams look like a mistake and one cream looks deliberate.
Watch for Self-seal flaps. Wax keys into raw paper fibre, not into the adhesive strip under a peel-and-seal liner, so buy gummed flaps if you are sealing with real wax.
Mailboxes
The one item on this page a child will visit every day in December.
A small red metal mailbox for the wall or a post
Usually $15 to $40
This is the one thing on the page a child interacts with every day for a month. A metal box on the wall by the front door becomes the place letters go, and the daily walk to check it is worth more than anything you put inside it. Metal over plastic, because it will live outside in December.
Best for Families who want the tradition to last more than one year.
Watch for Size. A box that will not take a folded sheet of letter paper is decoration, and children notice immediately.
A wooden North Pole post box for indoors
Usually $15 to $40
The indoor version of the same idea, and better if you have no porch or you live somewhere the weather would ruin a painted box. Wood also takes a child's handwriting in marker, which turns it into their post box rather than one you bought.
Best for Apartments, and children young enough to want it in their room.
Watch for Boxes with a hinged lid but no slot. The slot is the part that makes posting feel like posting.