Yahoo! Groups’ new email technique is stoppable (fortunately)

Fig. 1. Taken from Yahoo!’s documentation. (Recommended, my ass.)
OK, I have to take a break from writing my paper to complain about the new “Fully Featured” Yahoo! Groups email style, which was just turned on by default for everyone. Oh, but it’s got features, you say. Bah! My nice little plain-text emails have all been replaced by ugly, web-bugged, bulky HTML.
I had originally feared that you needed a Yahoo! ID to opt out of this monstrosity, but apparently you can switch back to “traditional” (read: plain text) emails by firing off a message to groupname-traditional@yahoogroups.com.