How to query postal express only by the tail number?

Sometimes I buy so many things that I don't know my express order number. At this time, I can check my EMS delivery progress through my mobile phone number. The specific operation is as follows:

1, open the mobile phone WeChat, find and add friends.

2. Search for the official account of "Postal Express" and add the official account of WeChat.

3. Enter the official WeChat account and click "My"-"My Order" in the menu bar below.

4. Click the menu on the left, and then click No Login. At this time, the mobile phone number login interface will appear. Enter your mobile phone number and send the verification code to log in.

5. After logging in, click Email Query in the menu bar and select the mobile phone number to query.

6. Click to enter the query result interface, and you can view your email information within one week.