As of August 29, 2025 U.S. customs changes now require additional steps when returning small parcels under $800. We’re all adapting, small businesses, Canada Post, and clients alike, so we’ve created this guide to hopefully make the process easier using our provided envelope.

Good news: There are no customs duties or fees to pay.

If you prefer, you can ask a Canada Post representative if they can complete this process in their system for you. However, we’re not yet sure if this option is available everywhere.

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Step-by-Step Guide

Step 1. Download the Zonos Prepay App

• For iPhone users: Open the App Store and search for Zonos Prepay.
• For Android users: Open Google Play and search for Zonos Prepay.

Step 2. Create Your Free Account

• Open the app and sign up using your name and email address by clicking on ACCOUNT in the bottom right corner.

Step 3. Start a New Shipment

1. At the bottom, tap Ship.
2. Select Is a Standard Package, then tap Continue.

Step 4. Add the Item Details

1. On the next page, tap Add Items Manually.
2. Under Item Description, type:
   RADON TEST KIT, RETURN FOR ANALYSIS
3. Under Country of Origin, select United States.
4. Under Value, enter $20.
5. Tap Add Item at the bottom.

Step 5. Review and Complete

• You’ll see an overview showing $0.00 owing.
• Tap Complete.

Step 6. Get Your Declaration ID & QR Code

• The app will generate a 13-character Declaration ID and a QR code.
• Canada Post will need either the Declaration ID or the QR code to process your package.

Saving the QR Code:

• iPhone: Tap Share → Save to Photos.
• Android: Tap Share → Save Image (or “Download” on some devices).

Tip: If those options don’t appear, simply take a screenshot of the QR code.

You can show the QR code on your phone or provide the Declaration ID to the Canada Post clerk when you ship your kit.