1. Click "Parameter Settings-Electronic Invoice Configuration" on the homepage; 1. The address and port of the format file server are automatically obtained without modification; (Format file server address port: 9111) 2. Email outbox address: fill in the email address used by the seller to send e-invoice push mail (QQ email address and 163 email address are recommended) 3. The email server address and port will be automatically brought out after you fill in the email outbox address, without manual filling; 4. Email smtp authorization code: you need to log in to the email outbox address you filled in. The specific method is as follows: Take QQ mailbox as an example. 1. Log in to the QQ mailbox that needs authorization by computer browser, click the account, pull it to the bottom of the page to find the pop3/SMTP service, and click "Open". 2. Send the specified content to the specified number with the mobile phone number bound to the mailbox according to the page prompts. After sending, click I have sent it on the email page. 3. The authorization code will appear after verification, copy and paste it on the SMTP authorization code of the mailbox in the billing software, and click OK (it is normal that spaces will be automatically eliminated when pasting). 2. Configure the electronic invoice directory 1. Click Invoice Filling-VAT Electronic General Invoice on the home page to enter the electronic invoice filling page, and click "Directory Settings" 3. Create a new electronic invoice folder on computer disk C, and then create three new folders named 1, 2 and 3 in the electronic invoice folder. 4. Click Directory Settings on the page to open the Import Settings window, where you can set the import file directory, backup file directory and result file directory, and select the newly created 1, 2 and 3 folders in disk C for each row, and then click Save to complete the setting of electronic invoice. -----------dividing line.