Hope this email finds you well./ Hope this email finds you in good health.
謹以此郵件向您致以問候.
原文為英文正式郵件的套詞,出處無法考證,大致意思說法不一,但可按中文習慣進行翻譯.
另附某國外網(wǎng)友的解釋（解釋不一,沒有定論）：
It is to confirm from the receiver of the email that they are doing fine and everything is going fine with them personally and professionally they will respond to you e-mail quickly and not make the e-mailer wait for a long time.