親展 しんてん書留 かきとめ郵便 ゆうびんではありません
shintenkakitomeyūbindewārimasen

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 親展書留郵便

1. Not registered mail.; Not sent by registered mail.

Negative
Polite
Formal Register
Computing