Real mail.
Real kids.
Real excited.
No Wifi Required.
MailDay matches your child with a real pen pal — and turns letter-writing into something they actually chase. Every month, Poppy the fox sends a mission from her latest adventure, and a themed pack with everything they need to write back. No screens. Just stamps.
See How it Works >
Meet your mail guide
Poppy is a curious, adventure-hungry fox who has made it her life's mission to prove that the best things in life arrive in an envelope. Every month she sets off on a new adventure — climbing lighthouses, mapping tide pools, befriending grumpy librarians — and sends back a missoin inspired by what she found.
She's also the one who matches your child with their pen pal. She takes the job very seriously. She has a clipboard and everything.
Say hello to Poppy.
"Every great friendship started with one person deciding to write first."
— Poppy, probably
Recent adventures
Simple as a stamp
How It Works
Tell us about your kid
Share your child's age, interests, and personality. Poppy — our resident fox and Chief Matching Officer — uses that info to find a pen pal they'll genuinely want to write to.
1
Poppy makes the match
We don't pair kids at random. Every match considers age, interests, and personality — so the first letter has something real to start from.
2
Write, send, wait, and squeal
Each month, Poppy's mission arrives: a prompt card with a real mission from her latest adventure — kids write (or draw!) back to their pen pal using her prompt. Plus stationery, a fold-and-seal envelope, and stickers.
3
Choose your plan
Membership Tiers
Ages 6–12
MailDay Core
Full letters, full pack, one real pen pal.
/mo
Curated pen pal match
Monthly stationery pack
Writing prompt card
Stickers + fold-seal envelope
Cancel any time
$14
Ages 3–6
MailDay Minis
Simpler missions, bigger stickers, just as much joy.
/mo
Age-matched pen pal
Drawing mission from Poppy
Extra drawing space on stationery
Oversized sticker sheet
Cancel any time
$14
Ages 6–12
MailDay Homeschool
Pen pals plus a full monthly writing curriculum.
/mo
Everything in Core
Monthly writing skills lesson
Parent educator guide
Extended Poppy mission pack
Vocabulary + grammar activities
$20
MailDay is what you do about it.
"No parent ever said I wish my kid had more screen time."
Start writing
Simple as a stamp
Parents are writing home about it
Sarah M.
"My daughter used to sprint past the mailbox every day. Now she sprints to it. She spent an entire Saturday morning writing her letter and didn't ask for the iPad once."
Mom of Lily, age 8 · Portland, OR
S
Terrell J.
"I never thought a 5-year-old would care so much about getting mail. James literally kissed the envelope when his first letter arrived. I may have cried a little."
Dad of James, age 5 · Austin, TX
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Rachel K.
"We homeschool and MailDay has become a cornerstone of our writing curriculum. My son's handwriting and vocabulary have genuinely improved — and he begs to do it."
Homeschool mom of Noah, age 10 · Vermont
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Give a one-time gift — $5, $10, $20, or an amount you choose — and help cover a MailDay membership for a child who couldn't otherwise afford one. Families can also apply to receive a sponsored mailbox — no questions asked, no stigma attached.
Give a kid their first mailbox.
Sponsor a Mailbox
Apply for a Sponsored Mailbox
The Sponsored Mailbox Program
The Poppy Shop
A little something extra.
Coming Soon
$14
Poppy's Starter Pack
$18
Everything a first-time letter writer needs. Stationery, envelopes, stamps, stickers, and a note from Poppy.
Coming Soon
$28
Poppy Plushie
$18
A huggable Poppy to sit by the mailbox and wait for letters. She is very patient. Extremely patient.
Coming Soon
$16
Poppy's Adventure Journal
$18
A guided journal for kids to track their pen pal journey, draw maps, and record their own adventures.
Browse the full shop →
WONDER
The Tide Pool Expedition — Adventure 01
Poppy discovers creatures who have been leaving each other messages in the rocks for centuries. A story about wonder and the things that are there if you look closely enough.
Read Post →
From the MailDay blog
Ideas for raising letter writers.
WONDER
The Tide Pool Expedition — Adventure 01
Poppy discovers creatures who have been leaving each other messages in the rocks for centuries. A story about wonder and the things that are there if you look closely enough.
Read Post →
WONDER
The Tide Pool Expedition — Adventure 01
Poppy discovers creatures who have been leaving each other messages in the rocks for centuries. A story about wonder and the things that are there if you look closely enough.
Read Post →
You've got questions
The ones parents ask most.
What if my child's pen pal stops writing back?
It happens — kids get busy, and sometimes a match just doesn't click. If your child's pen pal goes quiet, let us know. We'll check in, and if writing has truly stopped, we'll find your child a new match. No child gets left waiting at the mailbox.
How do you keep my child's address private?
When two children are matched, MailDay introduces their parents by private email — and addresses are exchanged directly between parents, never publicly and never in a group setting. Your child writes their pen pal's first name on the envelope; you address the outer envelope. Many families also set up a PO box just for letters — their child's very own mailbox — and we think that's a wonderful first step. (More in First Mailbox & Safety.)
What does MailDay look like for a 3-year-old?
MailDay Minis is built for exactly this age. Instead of a writing prompt, Poppy sends a drawing mission — so your child draws their reply. We love when a grown-up adds a sentence or two underneath, in your child's words: "Mira drew her cat because he sleeps in the laundry basket." It takes thirty seconds, it shows your child what writing is, and it gives their pen pal something to read out loud. Their pen pal gets a drawing and a few words in the mail — which is honestly better than most letters anyway. Tiny hands, big imaginations — it works.
How does the matching actually work?
When you sign up, you'll tell us about your child — their age, interests, and personality. MailDay matches on exactly those things: kids close in age, with interests in common, and enough difference to keep the letters genuinely interesting.
Can I cancel any time?
Yes, truly — no annual commitment, no cancellation fees, no guilt trip. If you just need a break, you can also pause your membership for a month or two and pick back up when the time is right. And if your child has a pen pal when you go, don't worry — we'll take good care of their match and help that other child find a new friend. We'd always rather you leave the door open than feel locked in.
What's in the monthly pack?
What's in the monthly pack?
Your monthly pack is a digital download — you print it at home on standard paper, which means it lands in your inbox on the 1st with nothing to wait on in the mail.
Core pack (ages 6–12): Poppy's adventure letter, two themed stationery sheets, a fold-and-seal envelope template, a conversation prompt card with five questions, a fun fact card, a drawing prompt, and a themed cutout sheet for decorating letters and envelopes.
Minis pack (ages 3–6): Poppy's letter in a read-aloud version, a color-in sheet, an activity sheet, a fold-and-seal envelope template, a drawing prompt, a themed cutout sheet, and a parent card with sentence suggestions.
Kids cut out and fold their own envelope — that's half the fun. All you'll need is a printer, paper, scissors, a glue stick or tape, and a Forever stamp.
A mom posted about her daughter — bullied at school, no friends, lonely. The comments filled up with other moms saying the same thing: my daughter would write to her. Dozens of them. Strangers, trying to hand a lonely kid a friend.
Nobody had built the thing that would let them. So we did.
MailDay is that comment section, turned into something a kid can hold — a pen pal adventure club for kids ages 3–12.
This started in a comment section.
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