Our system has never used the
vb private messaging system just an fyi although we have had our own pm system for quite some time. No set list of upcoming features yet for the next version.
I will take a look and see if I can replicate things I wanted to see how you have things set to see how to go about replicating it.
I have tried with html email off or on here.
As far as some extra feedback link where are you wanting it to display there are multiple locations in the showproduct page.