All, I have an email template that has a border around the complete email. The color can be changed. I don't know how I achieved it a couple of years ago, however, I simply reuse it for all of my various email.   I'm using the current 3rd generation editor. Email I recently sent: https://conta.cc/3U4uFfB here I changed the black border to red: https://conta.cc/3WtMCpg (btw, my inner and outer backgrounds are the same blue) ... View more