There are a few things you can do to help reduce the amount of junk mail you receive on your iPhone. First, make sure you have an email address that is associated with your account. This will help to reduce the number of messages you receive from unknown senders. Additionally, try to unsubscribe from newsletters and other email newsletters that you don’t need or want to receive. Finally, make sure that your phone is set up to automatically delete any messages that are not important or relevant to you. This will help to reduce the amount of junk mail that you receive overall.