dropdown – Multiple drop-down lists based on conditions

I am currently designing a email configuration tool which has a set of drop downs. They’re all based on conditions, so every drop-down list triggers the next one and so on.

Below is a rough wireframe of how it will function:
enter image description here

I am trying to figure out the best way to display this. At the moment, I’m thinking to just lay this out in a row, left-aligned.

Does anyone have any better suggestions?