Imacros Log file for success post / register

Does anyone know how to create a log file to record successful imacros posts?
I am trying to register at a scraped list of sites and want to run it overnight and then know which sites worked when i wake up the next morning via a log file. Not all sites send a confirmation email.

my log files are based on the urls I see on a CSV file. (its a clue)

Dude I need more than a clue. Not sure why the big secret. Its a log file.

Anyway I am extracting the last URL to a log file and if it is the profile one I will consider the post a success for that site.