Originally Posted by rando
They put the addresses of all recipients in the visible address line. As I said, when sending emails to multiple recipients who have no reason to have each others email addresses, use the bcc (blind carbon copy) address line. Assuming that none of the recipients has a computer with a bot that will harvest unprotected email addresses and expose you to viruses is, unfortunately, not credible.
Yes, but that is the same as you sending emails to people you know. Your email address will be harvested is somebody you sent to have a cracked computer. So I really cannot see why the risk suddenly has increased significantly for you.