How does Apple send a text message to the mailbox?

Because Apple's mobile phone has turned on the "iMessage" function and set "Apple ID" as one of the receiving methods. If you don't want to bind the mailbox with "Apple ID", you can cancel it in the settings.

Materials/tools: iPhone8.

The specific operation includes the following steps:

First, open "Settings" on the phone desktop.

2. Open "Settings", find "Information" and click "Enter".

3. Click "Send and Receive" on the "Information" page to enter the next step.

4. On the "iMessage Information" page, you can see that one of them is the email number of "Apple ID".

5. Finally, uncheck "Email" to complete the operation.