If you only have one mailbox, you can't get your account back. If the ID number corresponding to the account is true and valid, and a matching copy can be provided, and an accurate role name can be provided and made on the server, it needs to be completed by fax, surface mail or express delivery (the above three conditions are indispensable). Go to official website to find the customer service center, click the self-help service on the right, click Submit for special questions in the webpage fax self-help, click Submit to fill in the information, fill in any existing account, and indicate in the description of the problem that you forgot the account and need to get it back. Download the fax acceptance application form on the page, get the fax service code from the downloaded page, fill in the fax service code record in the fax acceptance application form, and attach a copy of the real and valid ID number corresponding to the account number. The second-generation ID card needs to be double-sided, and the signature is handwritten below. The role name and server of the account to be retrieved are indicated on the fax acceptance application form. Send the fax acceptance application form to Perfect, the fax number is 0 10-58859 179, and press 1 to send the fax. Fax acceptance time is 7- 15 working days after verification.