After using in XML DSL, my email body includes unwanted route metadata

Hi I'm new to camel, so forgive me for asking (more?) dumb question(s). With
help from this forum I've created a Multicast route, that emails
recipient(s) on completion. just baby steps for now..the logic / complexity
will expand as my understanding increases.

In my real code (not the pseudo below) I'm successfully routing / delivering
a completion email *but* the body of the email contains what I'm describing
as additional route metadata outside of the text I'm setting using <setBody>
Any suggestions on what I'm overlooking / how to suppress the email body
items such as: "CamelFileLength", etc

Code:

Received Email body:

Many thanks!