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.
September 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!
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
Writing together? Add a sibling
If there’s more than one letter writer at home, you can add up to four children to the same monthly bundle for $5 per additional child. Each child gets their own stationery, envelopes, activity page, sticker sheet, and wax seal. The story chapter, Pip’s letter, the month’s keepsake, and the collectable card are shared — a growing family collection to discover and follow together, all in one envelope.
Go deeper with the Adventure Guide
Each month's Adventure Guide is an optional printable companion inspired by that month's story — a simple 5-step framework (Read Together, Explore, Create, Connect, Share) that turns the story into real conversation, a guided physical activity, a hands-on project, and a reason to write a letter about it. Every guide includes age-tiered activities for ages 4–6, 7–10, and 11+, so the whole family can join in together, and it flexes from a quick 15-minute activity to a deeper 45-minute homeschool lesson. One guide covers the whole family. It's an optional add-on for $5/month.
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.