I am newer and just going through my customizations. I would like to add a line to separate my Signature Block from the main area of my Emails. Is this possible? Can we also make the background of the Signature Block Area a different color than the rest of the email?
Yes, that is possible in the HTML view. Right-click in the signature window and select change source. Enter the following HTML code:
On the following website you will find a good tutorial on HTML and CSS https://www.w3schools.com/