Understanding Leftover Segments

When you create a segmentation model, Connect automatically assigns one segment called Leftovers. This segment is for customers that did not fit into any of the other segments listed previous to it.

For example, imagine you are sending out an invitation for a big in-house sale. Suppose that you want to target customers who have spent more than $500 in the last year by inviting them to a private pre-sale. You can construct a model like this:

Segment 1: All customers who have purchased more than $500 in the last year
Segment 2: Leftovers

Segment 2 contains all customers who have purchased less than $500 in the last year.

Question: What if you want to be specific and not have leftovers?

It may not be practical to do so. In any database, there may be unclassifiable data. Take the following model as an example:

Segment 1: All women
Segment 2: All men

At the time of roll out, the system begins to assign customers in your audience to segments. What happens if a customer did not specify a gender? Without the leftover segment, there is no way to assign customers who did not specify a gender and these customers would not receive a message.

Note: The leftover segment functions exactly like any other segment in your model. You can send messages to leftover segments and view the results on reports.