1. First, please check other folders to see if there are any messages you lost (such as deleted, advertisements and junk folders). If you find these emails, just modify the exception settings and move them to your inbox.
2. Check whether there are these lost emails in your email client software. If there is, restore the mail to the network mailbox.
3. If you don't find the lost mail in the above folder, please call the customer service hotline for consultation.
The possible reasons for this situation are:
1. Mail was transferred due to abnormal mailbox settings (such as mail forwarding, letter classification and other settings);
2. The mail has been downloaded to the local computer through client software (such as Outlook). ), and the mail has not been backed up to the server because of the reasons set in the software;
3. The mailbox movement function is set in other mailboxes, but the backup is not set in the original mailbox.