Method / Step
-
You need to open the message has been sent
-
Click on the top left corner [file], it will switch to the information screen.
-
Click [undo] message retransmission and a small triangle, click [Mail] withdraw visit.
-
Then automatically return to the original e-mail, pop-up dialog box, there are two options, select one and click OK.
-
Undo will undo the mail the other did not read the message, read it if you have not undone.
END
Reproduced in: https: //www.cnblogs.com/Alenliu/p/5309563.html