Yes, in the lower left corner.

Here are the steps to set up automatic signatures.

1 Enter the "Write Letter" interface of the mailbox 2 Select "Set Signature" under "Signature" 3 Select "New Text Signature" 4 Enter the relevant signature information on the page. 5 In the "Title" box, enter a name that is easy for you to identify, such as "My Automatic Signature"; 6 In the text box, enter your signature information, such as name, address, email, etc. 7 Depending on your needs, select Save or Save as Default. The signature has been set up successfully. 8. Still open the "Information Interface"! 9. Click "Signature" and you will find that there is an additional signature titled "My Automatic Signature" that we just set. Select "My Automatic Signature" and the effect you want will appear as follows.