For the most current results on image blocking in email clients, view our updated post.
AOL recently updated their web-based software for all AOL.com and AIM.com email accounts. We've had a quick look around and even done some preliminary CSS testing. The good news is that CSS support is top notch, as in as good as Yahoo!, which was great to see. The not-so-good news was that images are now blocked by default for all unknown senders.
In the scheme of things, this isn't really that big a deal. Image blocking is the norm in most modern email clients and we've been promoting the idea of designing for images being turned off for the last couple of years.
So why are we even bothering announcing this? Because some people need to hear things 10 times before they sink in. We still see the occasional customer sending largely image based designs for their clients. We point them to our makeovers and reports, but some still don't seem to get the point.
Consider this another tap on the shoulder about image blocking.
On top of getting your design right, make sure you check out our other tips for minimizing the negatives of image blocking, such as becoming a "safe sender".