公開 こうかい受信 じゅしん しゃ表示 ひょうじでしょう
hikōkai jushinshahyōjideshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 非公開受信者表示

1. Probably a non-public recipient display.; Likely to show a non-public recipient.

Polite
Presumptive
Conjecture
Computing