Case Study: Inbound Guru achieves 440% revenue increase with HubSpot

Agency Partner, Inbound Guru, Proves Inbound Works with 440% Revenue Increase

Inbound Guru, founded in 2014 by John Englezos, is an APAC marketing agency specializing in inbound for niche markets. Starting as a one‑person shop, the agency needed to move beyond one-off work and prove measurable ROI—shifting clients from costly outbound or pure social strategies to predictable, retainer-based inbound funnels with clear attribution.

Partnering with HubSpot in 2015 and using its all‑in‑one platform, co‑brandable content, persona-driven campaigns and marketing automation—backed by HubSpot partner support—Inbound Guru built end‑to‑end funnels that drove rapid growth: 440% year‑over‑year revenue increase, 3× growth in client base, 100% of clients on retainers, a 40% close rate on nurtured leads and +40% website traffic overall. Client wins included an LTSA eBook converting at 69% and a niche luxury retailer seeing 1002% traffic growth and qualified high‑value leads.

Inbound Guru

John Englezos

Inbound Guru