ABAP proxy to mail scenario (html body + pdf attachment)

Hi experts,

We have ABAP proxy to mail scenario using mail package in the receiver mail adapter.

The email must have a body with specific format (pictures + plain text) so we think we need to use html language (one logo must be placed in the top left corner, the plain text must be centered, another picture must be at the end of the body....).

Also the email must have a PDF attachment .

I've been looking for information but i'm not use how to achieve this requeriment.

Our proxy call send us the information like the mail package structure:

<?xml version="1.0" encoding="UTF-8"?>

<ns:Mail xmlns:ns="http://sap.com/xi/XI/Mail/30">

<Subject>MySubject</Subject>

  <From>me@company.com</From>

  <To>you@company.com</To>

  <Reply_To />

  <Content_Type>¿html, binary, plain/text, boundary?</Content_Type>

  <Content>

  ¿HTML BODY + PDF in binary mode?

</Content>

</ns:Mail>

How the information in the Content tag must be send?  Should we use java mapping to format the body email / use modules in the adapter?

Please suggest.

Thanks in advance.