season's tidings; seasonal letter
A letter or message that conveys the feeling of the current season, often including seasonal greetings or updates.
I received a seasonal letter from a friend.
I write a seasonal letter conveying the deepening of autumn.
時候の挨拶 is a set seasonal greeting phrase used in formal letters, while 季節の便り refers to the letter or message itself.
Standard kanji spelling.
Kana spelling of 便り; slightly softer or more casual feel.
Compound of 季節 (season) and 便り (news, tidings, letter).