Do hi-res images in a campaign affect spam scores?
With retina screens becoming more popular, many email designers are using hi-res images to keep their designs nice and crisp. This begs the question: Do hi-res images affect spam scores and deliverability?
My intuition tells me that the potentially larger image file sizes could hurt your spam score and deliverability for some clients, but I don't have hard data to back that up.
Any deliverability experts have insight into this?