BCC (Blind Carbon Copy) is an email field that allows you to send a copy of your message to additional recipients without revealing their addresses to other recipients. Unlike CC, BCC recipients remain invisible to everyone else on the email, including the primary recipient and other BCC addresses.
BCC protects recipient privacy when sending to multiple people who do not know each other. It prevents accidental reply-all disasters that can expose private email addresses or create inbox chaos. For businesses, BCC is essential for maintaining professional standards, complying with privacy regulations, and building trust with contacts whose information should not be shared.
When you add email addresses to the BCC field, the email server sends individual copies to each BCC recipient. The original email headers are modified to remove BCC addresses before delivery, so neither the primary recipient (To field) nor CC recipients can see who received blind copies. Each BCC recipient sees only their own email address in the BCC field, not other BCC addresses. This technical mechanism ensures complete privacy for all blind copy recipients.
CC (Carbon Copy) recipients are visible to everyone on the email, while BCC (Blind Carbon Copy) recipients are hidden. Use CC when you want everyone to know who received the message, and BCC when you need to keep recipients private from each other.
No, BCC recipients cannot see other BCC addresses. Each BCC recipient only sees their own email address and the addresses in the To and CC fields. This is by design to protect recipient privacy.
BCC is appropriate and professional when protecting recipient privacy, such as emailing multiple clients or sending announcements. It becomes unprofessional when used deceptively to secretly monitor conversations or manipulate communication.
Invalid email addresses cause bounces that damage your sender reputation. When BCCing multiple recipients, even a few invalid addresses can trigger spam filters and affect deliverability to all recipients. Always verify your email list first.
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