I\'m trying to send the content of a word document as the body of an outlook email, but it happens that the formats of the texts (Bold, color, etc) are lost after they are inser
The Body property of the MailItem class returns or sets a string representing the clear-text body of the Outlook item. To preserve any formatting you need to use the HTMLBody or Word Editor.
The Outlook object model provides three main ways for working item bodies:
You can read more about all these ways in the Chapter 17: Working with Item Bodies.
So, you can easily use the Word editor to set the message body without loosing any formatting.