Send covertly, as a dupe email

• Private email attachment, briefly
• Surreptitiously email
• Stealthy email letters
• Covertly loop in
• Include in an email without other recipients' knowledge: Abbr
• Include secretly, as in an email
• Keep apprised, in a way
• Covertly add to an email
• Abbr. atop some e-mails

Wikipedia Word definitions in Wikipedia
BCC may refer to: