Zip's Mailbox Club sends kids ages 3-12 real mail from Zip, a cheerful postage-stamp character who lives in their mailbox. Every month there's a big personalized illustrated letter and a mid-month surprise - 24 mail moments a year - plus a collectible Mailbox Crew character card and the next chapter of a season-long mystery the child helps solve.
What makes it different is that it's two-way. When a child writes back, Zip remembers what they said and works it into the next letter, so the story gets more personal month over month. Pre-readers reply with drawings or stickers; older kids write on their own.
Screen-free, hand-packed in New Jersey by its founder, and launched in July 2026.