If you fill in your email address, Amazon can send official news to your email address. If you haven't created an email address, it will bring you a lot of inconvenience. It is recommended that you download an email address. You can download NetEase Mailbox Master. NetEase Mailbox Master has many functions. After downloading, you can register with your mobile phone number or with pinyin letters. After successful registration, the email address can send and receive emails. You can also use the email account to register application software. The registered number is your email account and your email address.