How to leave a message to Taobao customer service online?

Click the seller's product details page, and click the "contact me" icon on the right side of the details page, as shown below:

Click "Contact Me" and a chat dialog box will pop up:

Enter the content of the message for customer service in the red box above, and then click "Send", and the other party will receive the message.

Buyers can also leave a message to customer service on the home page of the seller's store, click on the home page of the seller's store, and click "Customer Service" on the right side of the home page:

Pop up the chat dialog box, enter the content of the message for customer service, and then click "Send" to let the other party receive the message.