Email Functionality in AX2012 R2

Hi AXperts,

Happy New Year to you all.

I want to be able to send my customer invoices to my customers directly via email without having to save them to my desktop and then send them out manually.

I followed the steps mentioned in this link : 

https://technet.microsoft.com/en-us/library/aa834374.aspx?f=255&MSPPError=-2147217396

But for some reason, the invoices are still not being sent.

Anybody who has done this and might be able to share insights or any other links / documents around the same?

Thank you so much :)