Blind Carbon Copy - an email feature that allows sending copies to recipients without revealing their addresses to other recipients. BCC recipients remain hidden from all other email recipients.
Derived from traditional carbon copy paper used in typewriters and business correspondence. 'Blind' was added to indicate the hidden nature of these recipients when email systems adopted the carbon copy concept.
The BCC function was crucial in early email etiquette and privacy protection, preventing 'reply all' disasters and protecting recipient privacy. Interestingly, the carbon paper metaphor persists decades after most people have never seen actual carbon copies!
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