Why can't the mailbox receive emails or fails to receive emails?
PC_Mail：
If the account was able to send and receive emails normally before, it is likely that the mail server is temporarily unstable. It is recommended that you try again later. If the above situation does not apply, please check the following points:
- Please log in to webmail and confirm that the POP\IMAP function is activated (QQ, SINA and other mailboxes need to be manually activated)
QQ Mail: After logging in, select "Settings", enter the "Account" page, enable the POP3/IMAP/SMTP service, and save the changes.
Sina Mail: After logging in, select "Settings", enter the "Account" page, enable POP3/SMTP, IMAP4/SMTP services, and save changes.
If you still cannot receive emails after activation, please try to change the username to a complete email address in "Mailbox Settings - Account Settings", that is, add the @ suffix (if the @ suffix is already included by default, try deleting @ and the characters after it).
If you still cannot receive emails after the above operations, please contact your mail administrator to confirm that the receiving server settings are correct. If you need to use SSL encryption for sending and receiving emails, you can also try checking Use Secure Link (SSL). Example: msn.cn mailbox settings: fill in the complete email address as the username, that is, add the @ suffix, POP3 server: pop3.live.com, port: 995, use secure link (SSL), sending server: smtp.live.com, port: 25, use secure link (SSL).