Zip’s Mailbox Club › The Wonder Library
Published September 4, 2026
LettersLetter mails one illustrated story letter a month to children ages 5 to 11, listed from $9.99 to $11.99 a month depending on the term. Zip’s Mailbox Club mails two personalized mail deliveries every month for ages 3 to 12 at $19.99 a month or $199.99 for a prepaid year, and Zip writes to your child by name and answers what your child sends back. LettersLetter is the cheaper envelope and a genuinely lovely piece of illustrated storytelling; Zip’s is the one to pick if you want the writing itself to be about your specific child and the mail to go both ways. Full disclosure: we make one of these two, so read this as a maker’s map of the field, not a neutral review site. Every price and detail below was read off each company’s own website on September 4, 2026. Check theirs before you buy.
Choose LettersLetter if you want a beautifully illustrated monthly story for a 5 to 11 year old at a lower price. One original story letter a month with the child’s name on it, plus a collectible postcard, a character sticker and a coloring page, from about $9.99 to $11.99 a month depending on how long you commit. If what your child loves is being read to and reading, and the budget matters, that is a good buy and we will say so.
Choose Zip’s Mailbox Club if you want the mail written to your child and answered. Two personalized mail deliveries every month, written to your child by name about the things they actually love, with a plain envelope and a real postage stamp in every package so they can write back, and what they write shows up in the next letter from Zip.
| LettersLetter | Zip’s Mailbox Club | |
|---|---|---|
| What arrives | An illustrated story letter addressed to the child by name, a collectible postcard, a character sticker and a coloring page | A letter from Zip written to your child by name, a collectible Crew card, a mission, and a piece of a year-long mystery |
| How often | One story letter a month; their site says they mail on the 15th and the 1st of each month | Two personalized mail deliveries every month (24 a year) |
| Price as listed | $11.99 a month monthly, $10.99 a month on six months, $9.99 a month on one year | $19.99 a month, or $199.99 for a prepaid year |
| Gift terms | One-time purchase that never auto-renews; one year listed at $119.88 in a single payment | Prepaid year at $199.99, and a gift path the grown-up sets up |
| Ages | 5 to 11 | 3 to 12, with the writing matched to the child’s reading level |
| Personalization | The story letter is addressed to the child by name; the story itself is the month’s story | Name, age, and the child’s own interests and past replies shape the letter |
| Child writes back? | No reply path described on their site as of September 2026 | Yes. Every package ships with a plain envelope and a real stamp, and Zip remembers what the child writes |
| Made by | LettersLetter, whose about page credits founder Roya with the hand-illustrated letters | Mack, a dad who writes and hand-packs the mail; launched July 2026 |
Sourced from lettersletter.com and this site, September 4, 2026. Terms change, confirm on their pages.
Their plans page lists three terms: $11.99 a month billed monthly, $10.99 a month on a six month plan, and $9.99 a month on a one year plan. The monthly tier is described on their own page as the try-it-out plan, cancel anytime, no commitment. Their gift page lists the same one year plan as a single payment of $119.88 that never auto-renews, which is a genuinely useful thing for a grandparent who does not want a card on file renewing forever. Their site also states that a portion of every subscription is donated to Save the Children.
Their plans page is clear that the term does not change what arrives: every plan mails the same story letter, postcard, sticker and coloring page. You are buying length, not a bigger envelope.
Zip’s Mailbox Club is $19.99 a month, or $199.99 for a prepaid year. That covers two personalized mail deliveries every month for one child, a letter package at the start of the month and a second delivery about two weeks later, which is 24 mail moments a year. Per piece of mail that works out to about $10.00, or about $8.33 on the prepaid year. So we are more expensive per month and cheaper per envelope than the LettersLetter monthly tier, and roughly level with it per envelope against their one year price. See our pricing page for current details, and how much a kids mail subscription costs for the wider price range in this category.
We say plainly that we are not the budget option. What the extra buys is writing built around one specific child, a story that carries across a whole year, and a reply loop that closes.
Their own website does not describe a reply path, as of September 2026. We read their homepage, plans page, subscribe page, gift page, age guide and about page on September 4, 2026. Across all of them there is no reply card, no return address for the child, and no statement that anyone answers what a child sends in. What they do describe, and describe well, is a story arriving with the child’s name on it. That is a one-way delivery by design, and plenty of families want exactly that.
Zip’s is built around the other half of the loop. Every package ships with a plain envelope and a real postage stamp, and when a child sends something back, a scribble, a drawing, a dictated sentence or a full letter, that detail is remembered and shows up in a later letter from Zip. We wrote about why that changes the experience in what happens when your child writes back.
One honest caveat, because this category is full of overclaiming: we are not the only kids’ mail service with some form of reply mechanic, and we do not claim to be. Several others describe replies in their own words. What we have not found described anywhere else is the specific combination we run: a reply envelope and stamp already in the package, and the detail the child sends carried forward into the next letter and into a story that runs across the year.
On the envelope and in the address line, yes. In the story itself, their site does not say so. LettersLetter states plainly that the illustrated story letter is addressed to your child by name, and that matters more than adults think. A six-year-old seeing their own name on an envelope does not care who typed it. What their pages do not describe is the story being built around one child’s age, interests or past replies. Their own words are that every plan mails the same illustrated story, so it is the month’s story for every subscriber.
Zip’s works differently: the letter is written to one child, uses their name inside the letter as well as on the envelope, and draws on what that child likes and what they said last time. If you want to see the difference in practice, how it works walks through it.
LettersLetter states ages 5 to 11. Zip’s Mailbox Club serves ages 3 to 12. Their age guide is one of the better ones in this category: it splits the band into reading stages and describes what a nine, ten or eleven year old actually wants from a story, which is longer arcs and cleverer problems. If your child is inside that band and reads for pleasure, they have thought about it.
Ours stretches wider at both ends because the writing is matched to the reading level. A three-year-old gets a letter a grown-up reads aloud with pointing and marking. A ten-year-old gets more words, more plot, and clues they can work out alone. That matters in two situations: if you have siblings at different ages, and if you want the subscription to still fit the same child in three years. See mail for 5-year-olds or mail for 9-year-olds and up for what changes with age.
LettersLetter describes one story letter a month, and their homepage states they mail on the 15th and the 1st of each month. They also say they ship to all 50 U.S. states and 23 or more countries, which is worth knowing if the child you are buying for lives abroad.
Zip’s sends two personalized mail deliveries every month, one at the start of the month and one about two weeks later. That is 24 arrivals a year rather than 12, which is the main reason our cost per envelope is lower even though our monthly price is higher.
These two are not the only shapes in this category. Little Letters Club lists $11.00 a month for a themed activity envelope for ages 3 to 6, so it aims younger and more hands-on; we compared it head to head in Little Letters Club vs. Zip’s Mailbox Club. Sunny the Mail Snail lists $58.00 for three months, $96.00 for six and $188.00 for twelve, and sends weekly, so it is the volume pick; that one is in Sunny the Mail Snail vs. Zip’s Mailbox Club. And activity boxes send kits and craft materials instead of letters, which suits a builder more than a reader.
All of them are laid out together in our comparison of kids’ letter subscriptions. If you are still working out whether this whole category is for you, start with snail mail for kids or the kids mail subscription checklist.
Pick LettersLetter if any of these describe you. Your child is five to eleven and what they love most is a story to fall into, not a conversation to keep up. Budget is the deciding factor and $9.99 to $11.99 fits where $19.99 does not. You want a one-time gift purchase that will never quietly renew on your card. You are buying for a child outside the United States, and their own site says they ship to 23 or more countries. Or you specifically want illustrated, original short fiction rather than letters from a character who knows your child.
Pick Zip’s if the mail being about your child, and answering your child, is the point. You want letters that name your child’s actual dog, actual best friend, actual obsession with sharks, and that change as those things change. You want your child to write and be answered, so the mailbox becomes a conversation rather than a delivery. Your child is younger than five or older than eleven, or you have more than one child at different ages. Or you want one continuing story across a full year rather than twelve separate ones.
Zip’s Mailbox Club launched in July 2026. Zip writes to your child by name every month and reads and answers what your child sends back. You can see how it works or what actually arrives in the envelope.
Their own website does not describe a reply path, as of September 2026. We read their homepage, plans page, subscribe page, gift page, age guide and about page on September 4, 2026, and found no reply card, no return address for the child, and no statement that anyone answers what a child sends in. LettersLetter mails an illustrated story to the child. Zip’s Mailbox Club is built the other way around: every package ships with a plain envelope and a real postage stamp so your child can write back, and what your child writes is remembered and used in later letters from Zip. If a reply loop matters to you, ask them before you subscribe.
Their own plans page lists three terms as of September 2026: $11.99 a month billed monthly with cancel anytime, $10.99 a month on a six month plan, and $9.99 a month on a one year plan. Their gift page lists the one year gift at $119.88 in a single payment that never auto renews. Zip’s Mailbox Club is $19.99 a month or $199.99 for a prepaid year. Check their site for current pricing before you buy.
Their site says ages 5 to 11, and their age guide breaks that into reading stages up to ages 9 to 11. Zip’s Mailbox Club serves ages 3 to 12, with the writing matched to the child’s reading level, so it covers a three year old who is read to and a twelve year old who reads alone.
Their plans page says every plan mails the same thing: an illustrated story letter addressed to your child by name, plus a collectible postcard, a character sticker and a coloring page in every envelope. Their site also says a portion of every subscription is donated to Save the Children. A Zip’s package holds a letter from Zip written to your child by name, a collectible Crew card, a mission, and a piece of a year long mystery, plus a plain envelope and a real stamp for writing back.
Their plans describe one story letter a month, and their homepage says they mail on the 15th and the 1st of each month. Their site also says they ship to all 50 states and 23 or more countries. Zip’s Mailbox Club sends two personalized mail deliveries every month, one at the start of the month and one in the middle of the month, which is 24 mail moments a year.
The envelope and the story letter are addressed to your child by name, which their own pages state plainly. What their pages do not describe is the story itself being built around one child’s age, interests or past replies; the illustrated story is the month’s story. Zip’s letters are written to one child by name and use that child’s age, their own interests, and what they said in their last reply.
It depends on what you want more of. For two way mail that remembers what your child writes back, and for a wider age range, Zip’s Mailbox Club is $19.99 a month or $199.99 for a prepaid year for ages 3 to 12. For an inexpensive themed activity envelope for a younger child, Little Letters Club lists $11.00 a month for ages 3 to 6. For weekly mail, Sunny the Mail Snail lists $58.00 for three months, $96.00 for six and $188.00 for twelve. All of them sit side by side in our comparison of kids letter subscriptions.
Every letter comes from Zip. Zip reads every letter a child sends back, and Zip always writes back, so the next letter picks up where they left off. Behind the scenes, Zip's Mailbox Club was founded by Mack, a dad who writes, personalizes, and hand-packs the mail behind these guides. Read the founder story →
Personalized real mail for your child every month, a letter from Zip, a collectible Crew card, and a year-long mystery only your child can help solve.
Join the Mailbox Club →A collection of essays about childhood, curiosity, imagination, and slowing down.