William Kammersell says, “You put a lot into picking the best images for your email creative. You make sure they look great in mobile and desktop client layouts. You even include a tracking pixel to gain valuable insight into how subscribers engage with your email.

Why are your subscribers getting security warnings from viewing your email?! The reason is although you picked a great image and tracking pixel, you delivered them via an insecure connection using HTTP instead of HTTPS”.

Securing Your Image

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