Not only table styling, as another person said. Duplicate CSS also. I've done view source on some newsletters. On at least one there is a top-level CSS style b

Not only table styling, as another person said. Duplicate CSS also. I've done view source on some newsletters. On at least one there is a top-level CSS style block with all of the rules. Then, who knows why, there's a duplicate of every single rule placed inline to the table row TR tags. That one also has zero line breaks and exceeds 1,000 characters per line (an SMTP violation). Unlike some other newsletters that bounce off my mail server, this one's sending script "fixes" it by arbitrarily adding a line break at 998 characters no matter what word is at that position. I've sent them links to the RFC and notes about the broken rendering but they just don't care.