The email address for submission was usually determined by the newspaper publishing house or editorial organization. You can find relevant information on the official website or social media. Usually, the submission mailbox would list the submission guide, including the submission method, deadline, submission content, etc., as well as the contact information of the editor or author. If you're not sure about the submission process, you should read the submission guide first and try to search for relevant information on the official website or social media. If you can't find the relevant information, you can consult the editor or the customer service staff of the submission email for more help.