Please note that I read my email with a text based mail reader, as this allows me to check my email from pretty much anywhere in the world that has an internet connection. I'd prefer you didn't clutter up my mail folders with HTML email. It requires extra effort for me to read HTML email, so at best it'll take me longer to get back to you. If I'm busy and your mail doesn't look interesting, it may never get read. Microsoft Word documents aren't likely to get read at all.
Most mail readers can be told to send plain text email on a per-recipient basis. I'd appreciate it if you'd take a few moments to set the preference in your software for my address before sending me email. Thankyou for your understanding.