"Improvements to the email interface".  You have a funny definition of improvements.  You broke it.  Now you should fix it.  Your solution is to have me give some feedback and then you "MAY" consider fixing it.

I don't think you understand how crucial and relevant this is!  Your response indicates something else.  

How is the "Receive invoice payments" article relevant to my question? 

I want a product that works.  This product doesn't now.