Case Study: ESM Inbound achieves 3X revenue, 5X more leads and 100% of clients on retainer with HubSpot

ESM Inbound - Customer Case Study

ESM Inbound, founded by two former teachers, helps educational suppliers market and sell into schools. Starting out as a social media scheduling service, the agency needed a CRM and a way to prove inbound marketing to skeptical clients while scaling beyond one-off projects and disconnected tools.

ESM adopted HubSpot’s freemium tools, joined the Partner Program, and deployed the full growth stack (Marketing, CRM and Sales) to run trials, migrate clients and deliver closed‑loop reporting. The result: 5x more leads, 3x revenue, 18 inbound leads per month, conversion lifts from ~0.5% to >2% in three months, 100% of clients on retainer and rapid progress to Gold partner status as it pushes toward Platinum.

ESM Inbound

John Kelleher

Former Teachers