Hi Josh,
I understand where you're coming from regarding prospect emails, but what about operational to customers? I may be going about this the wrong way, but I've got a necessary application for sending the same email multiple times.
We license our software and are trying to build a drip campaign for customers approaching their expiry date. The idea is to send a "license is expiring" email at 22 days, 15 days, 8 days and 1 day to warn that their license is about to expire. When they renew, they get removed from the program. The problem is that when their license gets close to expiry again, I have them re-entering the program, but they won't get the warning emails that they had received before.
This means I have to endlessly multiply the streams AND the emails to accommodate for future license expiry.
Does this make sense? I'm sure there are others out there that have come across the same issue?!