How to Fold a Letter: 6 Folds for Junk Journals (and One That Holds a Pocket)

The cleanest way to fold a letter into a junk journal is a simple trifold for a flat tuck, a pamphlet fold if you want it to open like a page, or a pocket fold if you also need it to hold a tag or photo. The right fold depends on what the letter does once it is in the book.

You have the letter on the kitchen table. It is 8.5 by 11, the handwriting is your grandmother’s, and you have opened it twice this week. You want it in the journal. You also do not want to fold it once down the middle, jam it between two pages, and watch the spine bulge for the next six months. So the letter has been on the table for three weeks, and the journal has been on the shelf.

A letter fold sorts the problem out in the five minutes it took to read the letter. Done right, the fold shrinks a full-size sheet down to journal-pocket size, opens cleanly when you flip past it, and sometimes makes its own small pocket for a tag, a photo, or the postmark you cut off the envelope. The harder part is not learning one fold. It is knowing which one to reach for tonight.

The short version: Trifold is the default. Pamphlet opens like a small booklet, pocket holds something extra (tag, photo, stamp), diamond looks like the envelope the letter came in. Accordion is for the long ones. Twist is for the one you want to feel like a tiny gift. Read the section before reaching for any of the last three.

What a folded letter does on a journal page

Before any of the folds, decide what the letter is doing once it is in the book. There are basically three jobs. A tucked-storage letter sits flat against the spread, opens when you pull it out, and goes back; a trifold or an accordion does that one well, and the pages around it do the visual work. A letter that opens like a page itself becomes part of the spread, with a small inner flap you turn while reading; pamphlet and diamond envelope folds both pull this off. And a pocket-letter is its own holder, the fold turning the page into a small envelope for a tag, a photo, or a pressed leaf you want to live next to the note.

Match the fold to the role. A letter you wrote yourself, meant to read once a year, almost always lines up with the pamphlet fold so it opens like a page. A letter from a friend that arrived with three polaroids tucked in lines up with the pocket fold, since the original pairing is the whole point. A note from a child reads best as the twist fold, because the small unrolling becomes part of the reread.

If you are still building the journal itself, the step-by-step beginner guide covers the base signature, and the page ideas guide shows the layouts these folds drop into.

Before you fold: the two-minute checklist

These three checks save more letters than any fold technique.

1. Score before you fold thick paper. Anything over 100 gsm (printer paper is 80, a thick letter or cardstock is 120 to 200) cracks at the fold without scoring. A bone folder, the back of a butter knife, or a dead ballpoint pressed firmly along a ruler all work. The fold then sits flat instead of fighting back.
2. Fold inward, signature outward. The handwriting goes to the inside of the fold so the outside of the folded letter is paper you can label, stamp, or leave blank. Friction on the outside of the fold is what wears the page over months.
3. Test the fold size against the journal. Measure the closed journal first, fold a scrap of printer paper to your planned dimensions, and slide it into the spread. If it sticks out, refold smaller. A letter that pokes past the page edge gets bent every time the book closes, and within a month the corner is a soft mush.

Six letter folds every junk journaler should know

The six below cover everything from a postcard-thin note to a long handwritten reply on legal pad. Read all six, dog-ear two, fold with one.

1. The classic trifold (the one you reach for first)

The trifold is the fold you already know from business letters. It takes a standard letter from 11 inches to a little under four, which is the dimension that fits inside almost any junk journal pocket page.

1. Lay the letter face-up, long edge horizontal. Pencil two faint lines on the back of the page to mark the thirds if you want them exact.
2. Fold the bottom third up to the top pencil line. Press the crease flat with the side of your hand or a bone folder.
3. Fold the top third down over the bottom panel. The top edge should sit a hair below the bottom fold to make sliding the letter back in easier later.

Best for: flat tucks, pocket-page storage, letters you want sealed in an actual envelope inside the journal. The trifold is also the only fold that opens completely flat for rereading without showing creases through the handwriting.

Risk: the trifold has zero personality on its own. Without a stamp, a wax seal, or a strip of washi across the closing edge, it reads as a tax document. Spend an extra minute making the outside look like something worth opening.

2. The pamphlet fold (letter that opens like a page)

The pamphlet fold turns a single sheet into a four-page mini booklet. Two folds, one cut, and the letter now opens like a tiny chapter of the journal.

1. Fold the letter in half top-to-bottom. Crease firmly.
2. Fold in half again, left-to-right. You now have a small square with the original page divided into quarters.
3. Cut a slit along the folded top edge from the center to one side. When you open the letter back up halfway and push the cut edges apart, the four panels stand up like a small booklet.

Best for: long letters you want to keep readable, letters with multiple paragraphs that work better split across pages, and any letter the journal flow asks you to read across two openings.

Risk: the cut is permanent. Practice on printer paper twice before you cut the real letter. The slit has to go through the folded edge only, not all the way across the sheet, or the booklet falls apart.

3. The pocket fold (the one that holds a tag or photo)

The pocket fold takes a letter and turns it into both a folded letter and a holder for one more thing. A tag from the writer’s name, a polaroid of the day the letter came, a pressed flower from the same week.

Lay the letter face-up. Fold the bottom edge up by about one-third of the height. Then fold the right side over by about a quarter of the width, and the left side over by about a quarter, so the side flaps meet near the middle. The bottom fold and the side fold create a small pocket in the lower section. Anything flat slides in.

Best for: letters that arrived with something tucked in. Pictures, ticket stubs, the postcard a friend sent with the longer letter. The pocket fold keeps the original pairing without you having to make a separate pocket page.

Risk: the pocket is shallow. Anything taller than about three inches sticks out and bends when you close the book. Keep the tucked piece small. If you have a larger photo, switch to the pamphlet fold and glue the photo onto one of the inside panels instead.

4. The origami diamond envelope fold

The diamond envelope turns a letter into the shape of the envelope it came in, with a small triangular flap that closes on the front. It is the one your friend folded notes into in high school, and the shape still reads as intentional twelve years later. Lay the letter face-down, fold one corner to meet the opposite corner so you have a triangle, then fold the two outer corners in to meet at the center. Tuck the top flap down, fold the bottom point up under the sides, and you end up with a small diamond about a quarter the size of the original sheet.

This fold is for thin paper only. Anything heavier than around 90 gsm cracks at the corner folds, and the first attempt is always slightly lopsided. The third attempt is the one that goes in the book. The diamond resists falling open without tape or a sticker, which is what makes it the fold for sealed-in-the-page surprises a reader will find a year later. Short notes, love letters, anything where you want the fold itself to feel like part of the gift.

5. The accordion fold (the long letter solution)

For letters that ran four pages or used legal-pad length, the accordion fold lets the letter live as a continuous strip the reader pulls open in sections instead of flipping.

Lay the letter face-up, long edge horizontal. Fold one short edge over by about an inch and a half. Flip the letter over and fold the same width back in the opposite direction. Keep alternating, mountain fold and valley fold, until the whole letter has been folded into a stack the width of your first fold. The result opens like a small concertina along the page.

Best for: letters that have to stay readable in order, transcripts of long emails, multi-page handwritten replies. The accordion holds the natural reading sequence and looks deliberate from the outside.

Risk: the strip can run several feet long when fully extended. If the page next to it is glue-heavy, the open accordion can catch and tear. Anchor only one end to the journal page so the rest can lift out cleanly.

6. The twist fold (the small-gift letter)

The twist fold turns a short note into a small twisted scroll, the kind you fish out of a jar tied with twine. Lay the letter face-up and roll the bottom edge up about an inch into a tight tube. Twist the right end clockwise and the left end counterclockwise, the same motion you make on a candy wrapper. The whole letter rolls and tightens into a thin scroll with two twisted ends, and a length of twine or a ribbon around the middle holds it shut.

It is the fold for one-line notes, written affirmations, the kind of letter the reader is meant to open one at a time over a year. A jar of twist-folded notes inside the back cover of a journal is a friend-birthday gift the friend remembers ten years later. It is also not flat, so it will not stay closed inside the journal spread without the twine, and it bulges the book when you close the cover. If the bulk bothers you, the diamond envelope gets you most of the gift-wrapped feel without the bulge.

A quiet trick: Match the fold to how the letter arrived. Trifold for business envelopes. Diamond for notes passed by hand. Accordion for anything that ran past two pages. The fold ends up acting like a small note about how the letter wanted to be read in the first place.

What makes a fold actually hold for years

The fold itself is half the work. The other half is the paper and the crease.

• Heavier paper needs scoring. Anything 100 gsm and up cracks at a hard fold without a scored line. Score, then fold, then press the crease with a bone folder or the back of a spoon to set it.
• Lighter paper needs a hand-press, not a tool. Printer paper and onion-skin papers fold cleanly under the side of your hand. A bone folder on thin paper leaves shiny lines that show on the outside of the crease.
• Old letters need a humidity check first. If the paper is brittle and twenty-plus years old, leave the letter inside a closed book overnight before folding. The slight humidity in the room softens the fibers and the fold stops cracking.
• Every fold benefits from one minute of rest under a book. Fold, place under any hardback, leave for sixty seconds. The crease sets and stays.

The supplies list covers the small starter kit you actually need for folding: a bone folder, a ruler, and a soft pencil. Three tools, under fifteen dollars.

What to fold and what to leave flat

Not every paper in a junk journal wants a fold. Three categories live better flat, glued straight to the page.

• Anything thinner than airmail. Receipts, gum wrappers, the tag from a teabag. They wrinkle into nothing once folded. Glue them flat under a piece of vellum if you want to layer.
• Photographs. Folding a photo creases the emulsion and leaves a white line through the image. Glue, do not fold. The page ideas guide has a small pocket layout that holds photos flat without folds.
• Pressed flowers and dried leaves. Folding breaks them. Tuck inside a glassine envelope or under a flap of vellum, glue the envelope or vellum into the spread, leave the original flat.

What folds well: letters, longer notes, magazine articles cut out to keep, recipes copied by hand on full-page paper, tracing-paper drawings, and anything else printed or written on regular-weight paper.

Common letter-folding mistakes (and the fast fixes)

Five mistakes account for most ruined letters. Each has a quick fix.

• Folding before measuring against the journal. The most common, and the most preventable. Fold a printer-paper scrap to the planned size first, check the fit, then fold the letter.
• Cracking the fold on thick paper. Score the line first with the back of a butter knife pressed along a ruler. Never skip scoring on anything heavier than 100 gsm.
• Folding face-out. The handwriting goes inside the fold, paper to the outside. Folding face-out wears the ink in two months from the friction of pages closing on it.
• Trifolding into uneven thirds. A trifold with one big panel and two skinny ones never sits flat in the book. Use a pencil mark for the thirds the first three times you fold. Eyeballing comes after the muscle memory.
• Tucking without anchoring. A folded letter slid into a pocket eventually slides out. Tape one corner inside the pocket with a low-tack washi, or anchor the fold to the spread with a single dot of glue along the spine edge.

Frequently asked questions about folding letters into junk journals

What is the best fold for a regular letter into a junk journal?

The classic trifold. It fits almost every journal pocket size, opens flat for rereading, and stays clean under repeated handling. Reach for it as the default; switch only when the letter needs to open like a page or hold something else.

How do you fold a letter into an envelope without an actual envelope?

The origami diamond fold. Fold the letter face-down corner to corner, then bring the side corners in to meet at the center, tuck the top flap down, and fold the bottom point up under the sides. The letter now has the shape of its own envelope with a triangular front flap.

How thick can a letter be before you cannot fold it cleanly?

Anything heavier than 200 gsm (lightweight cardstock) starts to fight the fold even with scoring. At that weight, use a pocket page or a sleeve instead. For 100 to 200 gsm, score every fold first.

Can you unfold a folded letter later to read it without ruining it?

Yes, every fold here opens flat for rereading except the diamond envelope, which has a tucked closure that wears slightly with each open. If the letter is one you will read many times, choose the trifold or pamphlet fold over the diamond.

What should I put inside a pocket fold?

Anything flat and small enough to clear the journal edge by half an inch on every side. A name tag from the writer, a polaroid of the day, a pressed leaf, a ticket stub, or the postage stamp from the envelope. Keep one item per pocket so the fold lies flat.

The next letter on your table can be in the journal by the end of tonight. Pick the trifold for the flat tuck, the pamphlet for the one that opens like a page, the pocket for the one that came with a photo, and skip the rest until you need them. Press the crease, slide it in, and open the book a year from now to find the corner is still flat and the handwriting is still legible. A Tuesday letter, still flat a year later.