| Subject | English | Spanish |
| commun. | blind carbon copy | copia invisible de cortesía |
| commun., IT | blind carbon copy | copia carbón ciega |
| commun. | blind carbon copy | copia oculta |
| commun., IT | blind carbon copy | copia ciega |
| comp., MS | blind carbon copy | copia carbón oculta (A feature of e-mail programs that allows a user to send a copy of an e-mail message to a recipient without notifying other recipients that this was done) |
| commun. | blind carbon copy | copia ciega de cortesía |
| IT | blind copy | copia oculta |
| commun., IT | blind copy recipient | destinatario de copia oculta |
| comp., MS | blind courtesy copy | copia carbón oculta (A feature of e-mail programs that allows a user to send a copy of an e-mail message to a recipient without notifying other recipients that this was done) |
| commun., IT | blind-copy recipient | destinatario de copia oculta |