往信

1. Origins, structure, and basic meaning

• Structure: 往信 is read as おうしん and is a noun for outgoing correspondence or the initially sent side of a reply postcard.
• Basic usage: The outgoing field of a reply postcard appears in 往復葉書の往信欄, while placing questions in the outgoing message appears in 往信に質問をまとめる.

2. Common pitfalls and similar expressions

• The sent side of a reply postcard
  • 往信欄 is the side initially filled in and sent by the applicant or sender, distinct from the side returned in reply.
• Difference from 返信
  • Unlike a response sent after receiving a message, this term denotes the initial correspondence directed to the other party.