Specific steps are as follows
1. Taking the web version of QQ mailbox as an example, after logging in to the QQ mailbox account, click "Settings", enter the page shown below, and click "Other mailboxes"
2. Click "Add another email account"
3. Enter in "Add account" Your school email address and password
4. Enter the address of the POP server here: pop3.mail.nankai.edu.cn
(take Nankai University as an example), and click Verify.
5. After the verification is passed, the QQ mailbox can also receive emails from the school mailbox, without switching back and forth, saving time, and most importantly, it will not delay things!