Hi all, This is a duplicate of someone else's post from a couple of weeks ago (Veonix Rising) but since there were no answers I thought I'd try. Since upgrading to Sierra some HTML emails (one from Backblaze tonight) are not rendering the HTML, but are displaying as the HTML source. It isn't every HTML email, and it isn't a daily occurrence. Does anyone have any idea why this may be happening and what could be done to stop it from happening? I know Apple historically haven't been a fan of HTML email but I doubt they'd deliberately break it. Would they? All was perfectly fine on El Cap, it's the upgrade to Sierra that has brought this issue.