Postal mail tracking and inquiry telephone? The tracking and inquiry telephone of postal mail can follow the following steps to inquire the postal telephone. Step 1: Open the browser. Step 2: Select Baidu. Step 3: Click the Baidu search box. Step 4: Input (tracking and inquiry telephone number of postal mail). Step 5: Find the postal parcels and letters. Step 6: After entering the main page, enter your order number to query. After entering, you can see all the messages of your package. Do you understand this explanation?