被接收(Received):发送的电子邮件已成功到达收件人邮箱。(Email sent from your end and it is successfully reached to the recipient mail box.) 被发送(Sent):电子邮件已发送,但收件人可能未收到。(Email sent from your end but it might not received to recipient.) 被退回(Bounced):电子邮件未能到达收件人。(The email ...