Thank you for the message source.
First, the message has media queries, so it looks different on a narrow screen.
I'm attaching the HTML extracted from the message, you can open it in a web browser, and make the window "narrow" and you'll see the images disappear and the fonts get larger.
Second, the message has some "very interesting" stuff -- a "viewport" tag that sets the message's display area to be twice as wide as the screen and disables scrolling and zooming.
As a consequence, the message's HTML cannot be seen completely (width) in Google Chrome on Android (sanity check). I'm attaching a screenshot, and again, this is the original HTML from the message.
It's clipped on the right (since the message says it's twice as wide as the screen) and cannot be scrolled or pinch zoomed out to see what's clipped. Only vertical scrolling and zooming in are allowed.
http://www.quirksmode.org/mobile/metaviewport/initial-scale. Sets the initial zoom of the page AND the width of the layout viewport.
I think whoever designed this message has some work to do (yes, I know it looks like "a bug in AquaMail").
