To ensure a successful package delivery into your PARCELBIN, we recommend that you create accounts with the three most popular carriers (UPS, USPS, FedEx). This will ensure that they have the information needed to safely deliver your packages into your PARCELBIN.Once your account is created, make sure you edit your account preferences to include a specific delivery location and access code.UPS https://www.ups.com/us/en/help-center/sri/ups-my-choice-delivery-instructions.pageUSPS https://faq.usps.com/s/article/USPS-Delivery-Instructions-The-BasicsFedEx https://www.fedex.com/en-us/delivery-manager.htmlAs a final step, please make sure you display the "Carrier & Delivery" signs  that come with your PARCELBIN in a visible area for your carriers (next to your doorbell or next to your front door, for example).