noun
Honorific term for someone else's letter, used in formal or respectful contexts. Not used for one's own letter.
先日はご芳信を賜り、誠にありがとうございます。
Thank you very much for your kind letter the other day.
noun
news of flowers blooming
Rare, literary sense referring to tidings that flowers have blossomed. Mainly encountered in classical or poetic contexts.
春の芳信が届いた。
News of spring blossoms has arrived.