Alleyoop is a specialized sales development and demand generation agency that acts as the “ultimate assist” for B2B companies that need more qualified pipeline but don’t want to build a large in‑house SDR team. The company provides fully managed outbound SDR programs, appointment setting, and event support, combining people, process, and technology to book meetings and demos for its clients’ sales teams. Alleyoop focuses on human-first, multi-channel outreach and positions itself as a true extension of each client’s revenue organization rather than a generic call center.
Founded in 2008 under the original name Inside Sales Team, Alleyoop has spent more than 15 years refining a repeatable outbound model centered on human connection, high-quality data, and disciplined execution. The firm later rebranded to Alleyoop to reflect its role as the “ultimate assist” in the sales process, setting up ideal opportunities so its clients’ AEs can close the deals. Today, Alleyoop is led by CEO Gabe Lullo, with founder Stephen Hays remaining a key figure in the company’s evolution and strategy. The company is headquartered in Buffalo, New York, and operates as a remote-first organization with roughly 150–160 employees worldwide, the majority of whom are quota-carrying SDRs focused on outbound prospecting. alleyoop.io
Alleyoop’s revenue-driving programs include Ultimate Assist and Plug & Play for outsourced SDR and customer service teams, along with productized offerings like Nurture, Nurture Pro, Target Demo, and Extend. These programs layer together human SDRs, human-verified data, tailored sales playbooks, phone and email scripts, objection handling guides, and a modern sales tech stack to create tightly orchestrated multi-channel campaigns. The firm also runs specialized initiatives to drive registrations and attendance for physical and virtual events. alleyoop.io
The agency has built a strong position in the outsourced SDR and appointment-setting market, particularly with high-growth SaaS and sales-tech brands. Alleyoop highlights case studies such as driving over $25M in ARR for ZoomInfo and record event attendance for Adobe at Dreamforce, and is frequently referenced in industry content and rankings of top appointment-setting companies. Its playbook-driven approach, depth of SDR management experience, and focus on being a long-term growth partner differentiate it from smaller shops and one-off outbound freelancers. alleyoop.io