When you create a shipment, our platform will attempt to verify the address you've entered. If our verification system detects a potential issue, you may be presented with a suggested alternate address. However, this does not necessarily mean that the address you've entered is invalid.

You still have the option to choose between using the suggested address and the original address you've entered for most postage types. The suggested address will always be used in order to receive a rate for USPS postage.

For this reason we always recommend that you review your postage labels after printing to confirm the addresses are correct and as expected. You are responsible for ensuring that all information including delivery addresses are accurate before dropping off your shipments to us.

Troubleshooting Address Verification Errors

It is your responsibility to verify that you are using the correct address information for your shipment, even if an alternate address is suggested. Our address verification tool may not catch all errors and this can cause issues when purchasing postage.

You may see error messages like the following even after selecting a verified address:

  • Unable to complete shipment purchase: Check if address is valid. 
  • Suggested City: XXXX

To resolve these issues, please go back to edit the address information for your shipment with the suggested changes after you’ve confirmed them with your customer.

Address Verification Checklist

Before you create your shipment it is a good idea to verify with your customer that the delivery address is accurate and complete. Be sure to check that:

You are using the correct address format

Our platform is able to detect address formatting but it isn’t fool-proof. It recognizes specific abbreviations as outlined for the destination country.  We encourage you to familiarize yourself with the proper addressing formats for shipments destined for the U.S. and Canada by checking out our guidelines.

International addresses can be particularly tricky. We suggest checking the format with the Universal Postal Union's guide on postal addressing systems (see drop-down menu under “Postal addressing systems in member countries”).

Your address uses only Latin characters

Invalid characters in the name, street and city fields can cause your postage purchase to fail even after verification. Make sure that your address contains only Latin characters as our partner carriers may not support other alphabets and symbols.

If you are getting an invalid character error, it might be a character that you cannot easily see. Sometimes copying and pasting addresses can carry over invalid space characters without your knowledge. If you suspect that this may have happened, please try recreating your shipment by typing in the address information manually instead.

In some cases, invalid characters can even appear in your custom sender/return address. If this happens you may need to update your return address.

Examples of errors include:

  • Recipient street contains invalid characters: \
  • Recipient city contains invalid characters: |
  • Return name contains invalid characters: | 
  • Sender street 2 contains invalid characters.

All key address information is included 

One of the most common reasons for address verification to fail is because key details were omitted. Don’t forget to include a unit or apartment number, floor or suite number or buzzer code if applicable for the delivery address.

Double-check that you have an accurate zip code or postal code for your shipment as they are subject to change. You can search for the correct zip code for a U.S. address here or find a Canadian postal code here.

Examples of errors include:

  • The postal code XXXXX is invalid for State, United States. 
  • The postal code is not valid for the selected Province. Please correct the postal code or select a different province. 
  • Recipient address postal code is invalid for selected province.
  • Sender postal code is invalid.

Your information is within the character limits

There is a limited amount of space available for addressing on a postage label. This is true for both the delivery and your return address.

To avoid information being left off of the postal label, make sure that all important details are within the character limits. Refrain from including additional details in the address information that are not required for delivery.

Keep in mind that maximum character limits vary by carrier. For example, address lines must be kept to 30 characters or less for Asendia shipments and 40 characters or less for Canadian shipments.

Examples of errors include:

  • Recipient street is too long, max length is 44.
  • Recipient city is too long, max length is 40.
  • Sender street 2 is too long, max length is 44.

If you’ve resolved all the address errors for your shipment but you are still having issues with purchasing postage, you can read about other common issues with purchasing postage in our troubleshooting tips.