sitefinity - Can i respond to the notification POST from SagePay with a POST -

i integrating sagepay sitefinity, server low profile integration , little stuck.

i have created custom offline payment provider in sitefinity, , class has relevant notification hooks (sitefinity has own dedicated notification url handles processing don't have run own).

the issue have, sitefinity wants post relevant information (status, redirecturl) in integration guides notification paid seems flush , present plain text representation of required return values.

is there url can post notification response too, or have plain text response?

for else, speak sitefinity see if have route this, there current setup think deals situations direct point of view directly able post , receive specific responses.

the current setup of server integration sagepay not that, in needs form of notification page output specific format part of response output (so response needs "rendered" page") sagepay pick , complete transation.

this custom cart implementation had bit more scope, think pita if had via built in checkout.

1. on payment page, if user selected card payment register sagepay via code library supply (if javascript enabled did via web api call , responded next url)
2. created notification.aspx page in publically available area on site , passed sagepay notification point
3. after payment confirmed have confirmation step in checkout deals setting required values pulled sagepay, has no output, processes order , payment before redirecting success step

should have been more simple this, have update internal notification page respond plain text response in order work.