The email wizard is pretty snappy other than going from step 3 to step 4 (step 4 is where you select distribution and suppression lists). This is because the wizard is pulling recipient counts for each of those lists in real time. When you have dozens (or hundreds) of lists, that can take some time. We have removed those counts (numbers in parentheses after the list names — see below) and are looking at better, much faster ways to display that info somewhere in the wizard. The wizard should progress from step 3 to step 4 very quickly now.
This similarly speeds up the recipients step in the drip program wizard as well.