A real child, matched to yours. A pack full of things to write with. The infrastructure to make it happen every month. That's what's on offer here.
Full letters, full pack, one real pen pal.
/mo
Pen pal match within 5–7 days
Poppy's adventure comic strip (5 panels)
Poppy's adventure letter
Two stationery sheets
Fold-and-seal envelope template
Conversation prompt card
Fun fact card + drawing prompt
Themed cutout sheet
Access to The Mailbox community
Rematch guarantee
Drawing prompts, simpler letters, same real friendship.
/mo
Pen pal match within 5–7 days
Poppy's adventure comic strip (5 panels)
Poppy's Minis letter — written for read-aloud
Color-in sheet + activity sheet
Fold-and-seal envelope template
Drawing prompt + themed cutout sheet
Parent card with suggested sentences
Access to The Mailbox community
Rematch guarantee
Core, plus a monthly resource pack built for homeschool.
/mo
Pen pal match within 5–7 days
Full Core pack (comic, letter, stationery, etc.)
Access to The Mailbox community
Rematch guarantee
Minis, plus vocabulary cards and resources sized for little ones.
/mo
Pen pal match within 5–7 days
Full Minis pack (comic, letter, activity sheet, etc.)
Access to The Mailbox community
Rematch guarantee
Full letters, full pack, one real pen pal.
/yr
Pen pal match within 5–7 days
Poppy's adventure comic strip (5 panels)
Poppy's adventure letter
Two stationery sheets
Fold-and-seal envelope template
Conversation prompt card
Fun fact card + drawing prompt
Themed cutout sheet
Access to The Mailbox community
Rematch guarantee
Drawing prompts, simpler letters, same real friendship.
/yr
Pen pal match within 5–7 days
Poppy's adventure comic strip (5 panels)
Poppy's Minis letter — written for read-aloud
Color-in sheet + activity sheet
Fold-and-seal envelope template
Drawing prompt + themed cutout sheet
Parent card with suggested sentences
Access to The Mailbox community
Rematch guarantee
Core, plus a monthly resource pack built for homeschool.
/yr
Pen pal match within 5–7 days
Full Core pack (comic, letter, stationery, etc.)
Access to The Mailbox community
Rematch guarantee
Minis, plus vocabulary cards and resources sized for little ones.
/yr
Pen pal match within 5–7 days
Full Minis pack (comic, letter, activity sheet, etc.)
Access to The Mailbox community
Rematch guarantee
At launch, we're offering a founding member rate of $8/month for any MailDay membership tier. This rate is locked in permanently — it will never increase as long as you remain a member.
This isn't a promotional discount. It's not a countdown timer with manufactured pressure. It's a genuine thank-you to the families who chose MailDay before anyone else had heard of it. Once the founding window closes, it's closed. There's no way to get this rate afterward.
If you're on the fence — this is a real reason to decide now.
Any tier. Locked for life.
Available at launch only.
Applies to monthly billing. Annual members also receive a proportionate founding rate. You can switch between tiers and keep the rate — it's tied to your account, not your plan.
/mo
The MailDay Starter Kit is a one-time digital download that gives your family one full month of Core pack content — Poppy's adventure comic, a stationery sheet, the conversation prompt card, a getting started guide, and a pen pal conversation starter card.
It's $17. You download it, print it, and see what your kid does with it. If they love it — and they usually do — you subscribe. If not, you spent $17 and learned something useful.
One-time digital download
One important thing: the Starter Kit does not include a pen pal match. A pen pal is a commitment for both families — we only make those matches for members. The Starter Kit gives you everything else.
One month of Core pack content
Getting started guide
Pen pal conversation starter card
Does not include a pen pal match
Every child deserves a pen pal. Not every family can afford a PO Box — which MailDay recommends for privacy, and which costs $10–30 per month depending on your location.
Give a Key sponsors a PO Box for a family who cannot afford one. It's an add-on at checkout — $5, $10, or $20 — and it goes directly toward covering that cost for another child. It doesn't affect your membership price. It doesn't get you anything extra. It just means another kid gets a mailbox.
Families can also apply to receive a sponsored mailbox — no questions asked, no stigma attached.
Apply for a sponsored mailbox →
One month
Add Give a Key at checkout when you subscribe. Your contribution sponsors a real PO Box for a real family. We'll let you know when it's been used.
Join MailDay and add Give a Key at checkout →
Two months
Four months
Core members are matched within 5–7 days. Minis members within 48 hours. We read every profile. We make the match carefully. It's never random.
Life happens. If your child's pen pal goes quiet for more than six weeks, let us know and we'll rematch at no charge. No questions asked. Your child doesn't have to know it wasn't their choice.
No contracts. No long-term commitments. Cancel before your next billing date and you won't be charged. Annual members can cancel before renewal — no mid-year refunds, but no pressure either. We'd rather you come back than feel locked in.
A note on PO Boxes: MailDay recommends families use a PO Box rather than their home address — for privacy. A PO Box typically costs $10–30/month depending on your post office and size. That's not part of your MailDay membership, but we want you to know about it upfront. If cost is a barrier, the Give a Key program exists specifically to help.
When you sign up, you fill out a profile about your child — their age, interests, personality, and what kind of pen pal they're hoping for. Our team (and Poppy, in spirit) reads those profiles and makes a considered match. We look for similar ages and compatible interests, with just enough difference to make the letters interesting. It's not algorithmic. A real person reads every profile.
Core members are matched within 5–7 business days. Minis members are matched within 48 hours. The difference is because younger children's matches require a bit more care — we want to make sure the reading levels and family expectations are well aligned. Your first monthly pack ships alongside or shortly after your match notification.
If a pen pal relationship goes quiet for more than six weeks, reach out and we'll rematch your child at no charge. We don't ask for explanations. Life happens — families move, get busy, go through hard things. Your child gets a new pen pal. They don't need to know the details.
Yes. MailDay is currently a digital membership — you receive a PDF pack each month and print it at home. Standard home printer, standard paper. The stationery and templates are designed to print on regular 8.5×11 paper. We're working on a physical tier (Phase 2) for families who prefer not to print. If that's you, get on the waitlist.
Minis (ages 3–6): the pack is centered on drawing, coloring, and simple activities. Your child draws their response; you can add a sentence or two. Their pen pal gets original artwork in the mail. Perfect for kids who can't write yet but absolutely want a pen pal anyway.
Core (ages 6–12): the pack assumes the child can write independently — or close to it. The conversation prompt card gives them five questions to choose from. Most 6-year-olds need a little help; most 8-year-olds don't. If you're unsure, Minis is the safer start — you can always upgrade.
Yes — each child needs their own subscription, since each child gets their own pen pal match. You can manage multiple children from one account.
Not currently — but it's on the roadmap. For now, the founding member rate ($8/month per child, locked for life) is the best deal available. If you're enrolling multiple children, locking in the founding rate for all of them is the move.
Yes. You can pause your membership for up to three months — useful if you're traveling, going through a busy season, or just need a break. Your pen pal relationship is held during a pause. When you resume, you pick up where you left off.
The Homeschool Edition adds a monthly resource pack to your standard membership — vocabulary flashcards in three age tiers, a copywork card from Poppy's letter, a nature journal page, a geography exploration sheet, a writing skills tracker, a read-aloud companion guide, and a year-end portfolio certificate. It's $6/month more than the standard tier.
You don't need it to have a great pen pal experience — the standard Core and Minis packs stand completely on their own. The Homeschool Edition is for families who want to use the pen pal relationship as a formal part of their language arts. If that sounds like you, read more here.
MailDay recommends families use a PO Box instead of a home address for privacy — and a PO Box costs money that not every family has. Give a Key is a $5, $10, or $20 add-on at checkout that sponsors a PO Box for a family who can't afford one. Every child deserves a mailbox. Give a Key makes that possible for kids who would otherwise be left out. Families can also apply to receive a sponsored mailbox — no questions, no paperwork, no stigma.
Not yet. MailDay is currently a digital membership — you print the pack at home each month. A physical tier where we mail a printed pack directly to your door is planned for Phase 2. If you'd like to be notified when that launches, get on the list here.
Pick a plan. Tell us about your child. Poppy handles the rest. Your first pack arrives within a week of your match. After that, your kid will check the mailbox every day. That part we can promise.