必要書類は今週中に郵送してください。
Please mail the required documents by the end of this week.
合否の結果は後日郵送でお知らせします。
You will be notified of the results by mail at a later date.
申込書を郵送したが、まだ届いていないらしい。
I mailed the application form, but apparently it hasn't arrived yet.