For a marketing agency, there are plenty of software tools that you can hitch your wagon to. And those software tools can be in all kinds of segments - marketing automation, sales tools, chat, email, website hosting, productivity, etc.
Several years ago when we were looking through all of the tools that we could partner with, one quickly floated to the top - HubSpot. In 2014 we became a HubSpot Agency and joined their partner program. Why? Well I'm glad you asked...