Adding a daily signature is pretty straight forward. Open KMail by pressing Alt+F2. Enter kmail in the text box and then press . Once inside KMail, go to → . In the Identities selection, highlight the identity to add the signature to and then press the button on the right-hand side of the window. Select the Signature tab. Check the Enable signature box. From the Obtain signature text from drop down, select . In the Specify command text box, enter ksig --daily and then press the button.