You're being almost too polite. Fab's mails utterly pointless without the images.
I normally hate email with lots of images and prefer plain text over HTML, but in this particular case anyone claiming to read your emails with the images off is just trolling.
Here is an example of our emails, http://cdn.splatf.com/w/wp-content/uploads/2011/10/fab-email..., it is from a while ago but the layout is the same. As you can see we are a very visual company. The emails mirror the site so you can use that as a reference too. Again very visual and "not easily replaced".
I normally hate email with lots of images and prefer plain text over HTML, but in this particular case anyone claiming to read your emails with the images off is just trolling.