HTML Email Standardization

Let's face it. Building web sites to work with multiple browsers sucks. Building HTML emails to work with multiple email clients sucks even worse. I found this site today that is working to standardize HTML rendering across all email clients. In the process they have evaluated a list of capabilities for each client from webmail services like Gmail, AOL, Yahoo, and Live to desktop clients like Outlook, Entourage, and Thunderbird. Check it out.