InfoPath Dev

Hello  I have an InfoPath 2010 form which is submitted to my clients via email.  What I would like to happen is for them to accept / acknowledge the email as the content is a Purchase Order.  this would then be submitted back to a SharePoint document library which is email enabled.  Is this possible? if so can someone point ...

 Thanks for the replay and apoligise for the slow reply.  not had much chance to work on this of late.  Im sure I will get to the bottom of it one way or another   Regards 

Hey, Thanks for the reply.  When you say "Add a condition to your sum formula" what do you mean?  I will look at the unused column but im not the DB owner and will have to check with the developer if he is happy for that to happen to store the values. Thanks again

Hello,  Im trying to get a calculated value to add all the totals from one line as a "final" figure within my InfoPath 2010 form.  The data is in a repeating table and i just cant seem to get the calculations correct. My table is faily basic, and is filtered to only show rows that have specific data. this part is working ...