Automate SAP mail with attachment in 45B?

Hi,

I aware of the options to solve this problem on 4.6C and higher. But those function modules and options are not

available in 4.5B.

I've done some digging but have had to move on and am aware that the following functions are used but at this point I'm unclear on how to put the pieces together :

SO_ATTACHMENT_INSERT

SO_WIND_OBJECT_HEADER

SO_OBJECT_INSERT

Maybe someone has some ideas?

Kind regards,

Mark