Select the mail in the picture on the welcome page, and double-click to enter the inbox:
Select actions-> tools-> Preferences, as shown in the figure, click Select:
Pop up a window, and select the signature in the window, that is, signature:
Select Automatic, enter text under this tab, and then enter your signature in the box. When finished, click OK to finish the setting:
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Check whether it is successful. Select New Presentation in the menu bar and create a new email. You can see that the signature was successful.
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This will be very convenient, and you don't have to enter these repeated words every time.