Look at the FileMaker Send Mail script step (in the Miscellaneous section, at the end). It has an option for "multiple emails (one for each record in found set)". Send Mail came out in FileMaker 6, so it will work with older versions of Apple Mail. I don't know what Word has to do with this.
P.S. This is going to be a plain text email (it can have an attachment). If you need HTML formatting or images, you'll need a email plug-in.