E-mail and Attachments
Learning about email and attachments is important because you need to know who it is from and to make sure the attachment isn't anything bad that can harm us. Email and attachments are also good for you to know in case you have a job as a technology person or whatever other job that contains emailing. I would rather send a blind copy because maybe you only want that person to see but you also have to sent it to the rest but its private and you don't want them to know you rather send a blind copy. Maybe if it was a surprise a party and you didn't want the person you wanted to do it for know then send a blind copy.