How do I have Sandy send regular plain text emails so that certain forwards will not mangle the message?

For example when I try to use Sandy to schedule things the conformation emails as well as the lookup responses are mangled to the point of being unreadable by gmail. I use gmail to forward the email to my Blackberry. I am assuming this is because most email solutions like gmail have problems with non-plain text emails.
 
sad I’m frustrated
Inappropriate?
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