one template with 3 different configurations. code therapy: troubleshooting html email. passion free html responsive email template. responsive \u0026 retina ready responsive \u0026 retina ready. open code editor, create html email, send html email i know i\u0027m tempted by this and go this route a lot, especially when creating an important one-off . at this point the template is using the default htmlemailio imagery and branding so remember to switch the logo out for your own logo. email clients and rendering engines.