Navigate to the Inbox module.

Integrate your existing email account to send and receive emails.

Click on the Manage option to view configuration settings

Select the email account you want to configure

Look for the Email signature option associated with the selected account

Click on it to customize your email signature as desired

Save the changes after customizing

When composing a new email, your customized email signature will be automatically added at the bottom.

You can add the body of the email above the signature.

If you wish to remove the signature from a specific email, you can do so manually before sending