I have a list with 170k subscribers and i am struggling to create a campaign list to email some of them. here is what i am doing now:
1) the leads in the database are segmented into smart lists based on a geographic area unique to the company( read: many different cities under one geographic area name)
2) i have created about 150 such smart lists.
3) i also have a main inclusion smart list that contains 135 smart lists from point 2. this means that i only want to email people that make it to one of the 135 smart list.
result: marketo squawks when i try to see people in this smartlist monster.
any suggestions on how to improve this are welcome.