###TEMPLATE_FILE###
<data>
	<name>###value_name###</name>
	<email>###value_email###</email>
	<message>###value_message###</message>
</data>
###TEMPLATE_FILE###

finishers {
	1.class = Finisher\Mail
	1.config {
		admin {
			...
			attachGeneratedFiles {
				1 {
					class = Generator\File
					config {
						templateFile = TEXT
						templateFile.value = path/to/form/html/file.html
						storeInTempFile = 1 
						returnFileName = 1
						staticFileName = file-example.xml
					}
				}
			}
			...
		}
	}
}