It's mind blowing what I was able to accomplish in 4 days! First thing was to make sure we had all of our user data into Customer.io and that was an absolute breeze. A few clicks and we had all of our analytics events flowing in via the
Segment integration. Then it was just a simple CSV upload to backfill existing users. Next was making some backend tweaks to use Customer.io's Node.js SDK to deliver the emails. Again, super simple change.