There are more than 200 countries and regions in the world, and for various reasons, not every country has a zip code. Some countries are small in size and do not apply zip codes, while others do not need zip codes and can be sorted automatically.
Countries without postcodes are: Chile, Colombia, Fiji, Vietnam, Togo, Sri Lanka, Ireland, Saudi Arabia, Peru, Panama, Bahamas, Myanmar, Iraq, Iran, Egypt, Costa Rica, Benin, Kuwait, Malta, Nepal, Nigeria, Venezuela, Yemen, Trinidad and Tobago, United Arab Emirates, Syria, Oman, Jamaica, Cambodia, Ghana (only common parts are listed, but not limited to), etc.
To send express to these countries, you can only fill in the address as required, and do not need to fill in the zip code.