Many web mail clients (Yahoo, Hotmail, etc.) don't render images by default, and you opt to download each email's images with a button. HTML mail renders withou

Many web mail clients (Yahoo, Hotmail, etc.) don't render images by default, and you opt to download each email's images with a button. HTML mail renders without images pretty cleanly if the alt text is included. IMO, this should be the default for all email clients, and the lack of that feature on mobile devices shows the immature state of mobile development compared to desktop.