別べっ封ぷう

noun, noun or participle which takes 'suru'

under separate cover; accompanying letter

Refers to a letter or document sent separately from the main correspondence, often in the same envelope or package. Used in formal or business contexts.

• 履り歴れき書しょは別べっ封ぷうでお送おくりします。

  I will send my resume under separate cover.

• 請せい求きゅう書しょを別べっ封ぷうにて同どう封ふういたします。

  We will enclose the invoice as an accompanying letter.