olemus
e-kirja koopia,
mille saatmisest meiler ei teavita teisi adressaate

Wiktionary:
(Internet) a copy of an email message that is sent to a person (often one of many) other than the primary recipient without the express knowledge of the other recipients

ülevaateid
https://en.wikipedia.org/wiki/Blind_carbon_copy

vt ka
- koopiasaaja