Case Study: MainStreet achieves 15% ARR from referrals with GrowSurf

Hyper-Growth B2B Startup E!ciently Scales Marketing with GrowSurf, Driving 15% ARR from Referrals

MainStreet, a fast-growing B2B FinTech/GovTech SaaS founded by three ex-Googlers, needed a scalable referral-tracking system to capture customer-to-customer, partner, VC and paid-channel referrals as it surged past $3M ARR. They selected GrowSurf’s referral platform (API and Zapier integrations) to avoid building and maintaining an in-house solution.

GrowSurf’s implementation saved engineering time—MainStreet launched a first draft program in under 20 hours—using API, Zapier automations and built-in notification emails to automate referral flows. The GrowSurf solution gave marketing clear visibility and performance metrics, helped drive millions in ARR in the first weeks, and produced measurable impact: referrals accounted for 15% of MainStreet’s ARR in the most recent six-week period, with referred customers delivering multi-million-dollar value and cost savings.

MainStreet

Joshua Ip

Software Engineer