Help Center

Download the PostBox app, tap Sign Up, fill in your name, email, and password, then verify your email with the one-time code we send you. Once verified, complete your profile and you are ready to send your first postcard!

Coins are the in-app currency used to purchase stamps and postcard designs. You start with 100 free coins. You can earn more by completing daily check-ins, finishing tasks on the Rewards screen, and redeeming invite codes from friends.

When you send a letter, PostBox automatically assigns an anonymous pen-pal from another country. The matching algorithm considers distance and mailbox availability to ensure a fair and global experience. You cannot choose a specific recipient in the standard flow.

Delivery is simulated based on real-world distance. A letter to a nearby country may arrive in a day or two, while cross-continental letters can take up to two weeks. You can track progress from the Home screen.

Not directly in the current version. PostBox is designed for discovering new pen-pals randomly. If you have already received a letter from someone, you can reply to them directly from your inbox thread.

Your Mailbox has a capacity limit. It fills up based on letters you have received minus letters you have sent. Keeping a healthy balance of sending and receiving keeps your mailbox open. A full mailbox temporarily prevents new letters from being assigned to you.

Go to Settings → Change Password. Enter your current password, then your new password twice. Tap Update Password to save.

Go to Settings and toggle off Notifications. This will stop PostBox from sending you push alerts. You can re-enable them at any time.

Account deletion is currently handled by our support team. Send an email to support@rzstudio.online from your registered email address and we will process your request within 30 days.

Open the letter in question and tap the three-dot menu (⋮). Select Report or Report & Block. Our team reviews all reports within 24–48 hours.

Your pen-pal may not have logged in recently. PostBox will reassign a new receiver if the original one is inactive. Check the Home screen for delivery status updates.