1. Open qq, find the email address of qq homepage, and click Enter.
2. After registering in qq mailbox, click the option of writing letters.
3. After entering the email page, find other options at the bottom of the text and click the arrow icon next to it.
4. At this time, other options will be expanded to find the option of receiving mail, and a tick will be put in front of this option, so that as long as the other party has read the past mail, it means that the other party has read it.