We use Zaius for email marketing, and unlike every other platform I have used over the past 15 years (I know, a scary long time), Zaius is the first that basically does not impose limitations on our ideas for how we want to market.
For example, they can do the usual email suspects, such as cart abandonment and browse abandonment. But I hate getting browse abandonment emails for products I looked at once and never went back to. Or when I bought something else in the same category as what I looked at, I sure as heck do not need a reminder email about looking at that again. With Zaius, we simply do not send out browse abandonment emails unless someone has looked at the same item X number of times within Y number of hours or days, and did not add something from the same category to my cart.
That is just a simple example of how Zaius allows us to pretty much put into action virtually any idea we want easily. It allows us to do things way more intricate than that WITHOUT THEM HAVING TO DO ANYTHING. Once you learn the system, what you can do on your own is astounding.