I have the same problem. Some emails are showing stuff like: p { margin: 0; } or   v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} However, setting the above property to true does not seem to resolve the issue.  Any ideas? I ...