juanmaria > We must deactivate the “Preview panel”.

Thank you for that! Up to now it was set so when the mail came up the body of the first message was displayed. Now I just have a list of Emails and can decide on read or delete before they are open.
The Bcc option, for me, means nobody gets all the names on the list of people I send a message to : Huzzah. And it eliminates having to write separately to people who have very private Email addresses which they entrusted to me and which they do not want bruited about the ether.
Thing is, I could not figure out how to delete the addresses when I used "forward" or "reply" so always copied and pasted into a new message and that's time consuming.
Guess what all this boils down to is I am now a happier camper. Thank you all for your patience. And big hugs to The One who clued me into the Bcc option and juanmaria and Jackie and, well *all of you!