Is there no letter reminder in Sina mailbox?

You can also have a letter reminder service without spending money, but the operation is slightly complicated.

The specific steps are: first register an email address @ 139.com, which is the email address opened by China Mobile. You only need to register with your mobile phone number, and it must be your current mobile phone number, otherwise you will not receive the verification code during the registration process. Then log in to the email address of home page 139, and bind Sina email address in it. As long as there is an email sent to Sina mailbox, 6539.