How do you market to or find people using HubSpot?

👋 Hi there! I've been tasked with figuring out how to do marketing for our productized service. The productized service is on-demand HubSpot support, for a flat monthly rate. So far, I've started a newsletter and began engaging on LinkedIn. Any help / suggestions is greatly appreciated 🙏 . As I don't really have any marketing experience. Cheers, Jameson