What's Inside Every Happy Mail Bundle

The Heartpost Letter Club is more than a monthly envelope—it's an invitation to slow down, create, and connect.


Every monthly Happy Mail Bundle is thoughtfully designed to spark imagination, encourage creativity, and make sending real snail mail feel like an adventure. All designed, printed, handcrafted, and curated in our tiny little studio.

August 2026 is our very first delivery, so we’re showing it in full - but every other month will be a secret, with a sneak-peek!The full August Happy Mail Bundle spread — stationery pages, Pip’s letter, the SPECIAL DELIVERY envelope, sticker sheet, wax seal, collectable card, story chapter, coloring page, and kraft envelopes.Each month, your child will receive a Happy Mail Bundle from Pip, filled with stories, creative surprises, and everything they need to send two real letters. Every delivery follows Pip's adventures as he explores new places, discovers curious keepsakes, and learns that even the smallest acts of kindness can travel a long way.

Along the way, children are gently encouraged to read, create, write, and mail letters to the people they love. With every story, they'll build confidence in writing, practice meaningful communication, and experience the joy of making someone else's day—one letter at a time.

Our mission is simple: to help bring real letter writing back into childhood by giving kids a reason to send mail, not just receive it. Because the best memories aren't made on a screen—they're tucked inside an envelope, sealed with care, and sent with love.

Inside each monthly bundle, you’ll discover

Pip’s SPECIAL DELIVERY kraft envelope with a feather stamp, resting on his handwritten letter, with the tiny feather treasure tucked alongside.

A personalized letter from Pip, tiny treasure, and writing prompts

Introducing the month’s adventure and inviting your child to join the journey. Tucked inside his envelope: a tiny treasure inspired by Pip’s latest discovery, perfect for building a growing collection over the year.

Pip’s First Flight — the illustrated two-page story chapter with the Special Delivery route note.

An original illustrated story

Follows Pip’s travels and shares gentle lessons about kindness, curiosity, courage, and connection — in Pip’s own curious and clumsy way.

The month’s coloring page — Pip flying over a sunny meadow with a house, oak tree, and mailbox.

A creative activity

A coloring page, maze, or hands-on project connected to the month’s theme.

Four pages of wide-lined themed stationery — Pip flying over a sunny meadow with a pink mailbox among the flowers.

Four themed stationery pages

Four pages of beautiful double-sided, wide-lined stationery designed to inspire children to write and decorate their own letters.

Two kraft guided envelopes with lined spaces for addressing and a stamp corner.

Two guided envelopes

For sending happy mail to family or friends, while making addressing easier.

The Heartpost Letter Club themed sticker sheet — Pip, a smiling sun, wax seal, map, feathers, hearts, and a HELLO! sticker.

Themed sticker sheet

Stickers that match the story for the month - for personalizing every letter, journal, or notebook.

A handful of colorful wax seal stickers with heart, crown, butterfly, and flower designs — sample shown, colors and designs vary.

Two wax seal stickers

To add a special finishing touch.

Two USPS Forever postage stamps, ready for mailing real letters.

Two forever postage stamps

Two real stamps, so the letters are truly ready to mail — no stamp scramble!

Collectable Card No. 001 — Pip the Heartpost Carrier Pigeon, in a postage-stamp style frame with his blue postman’s cap and mailbag.

Collectable Card

Each month a new character, location, or object is introduced on their very own collectable card.

Mailing tip: Our wax seal stickers are thin and flexible, and letters sealed with them almost always mail just fine with a regular stamp. Once in a while, the post office may ask for a little extra postage for a sealed letter. If you want to be extra careful, add an extra stamp or ask for hand-canceling at the counter.

Every monthly bundle is carefully curated to create a complete experience—from reading and creating to writing, sealing, stamping, and sending. It’s more than a craft kit or a storybook — it’s a complete pen pal kit and a monthly tradition that helps children build meaningful connections while discovering the lasting joy of sending real letters.

Join Pip’s club — $19.99/mo