Just an update to let you know that the new versions of the compare mailings spreadsheets are now available in all accounts! Please give them a try and see what you think. For a rundown of what's included, please read through this message on this thread.
We also have some major upgrades to the look and functionality of this page that are almost ready for beta feedback. I'll make sure that everyone on this thread is the first to see those, so keep your eyes peeled!