Horrible Outlook
fixoutlook.org–a site specifically for letting you add your voice to the choir of people asking for Outlook’s rendering engine to, oh I don’t know, work as expected? Check out the Email Standards Project for the full story on why standards matter in Email as well. Addition: Did you know that Outlook uses Word to render email? I sure didn’t. That is full on odd. While I can see the logic behind Microsoft’s decision to go that route (giving email authors the same tools as Word), not everyone uses Word to compose email, especially in mass mailing. I would assume most “rich” email is being written with, um, HTML.