初はつ便だより

noun

first letter; first correspondence

Refers to the first letter or message received in a new year, season, or other period. Often used in a literary or slightly formal context.

• 新しん年ねんの初はつ便だよりをいただき、ありがとうございます。

  Thank you for your first letter of the new year.

• 春はるの初はつ便だよりが届とどいた。

  The first letter of spring has arrived.