When you are sending an email to a group of persons and at the same time you want someone outside this ring to receive the same message, you fix it using the Blind Carbon Copy field. It is not wise to include this individual into the “To” field where everyone’s name in the ring is placed. Courtesy and respect for the group demands that you include the name of that individual in the Blind Carbon Copy field “BCC”. Blind Carbon Copy allows this individual to receive the same mail without the group knowing the individual received it.
Bottom-line: If you want someone else to see an email others are privileged to see, use the BCC field, else trouble may brew like wild fire. Correct?