Callbox is a long-standing B2B lead generation and sales development services company that helps organizations build predictable pipeline through fully managed, multi-channel outbound programs. Founded in 2004 and headquartered in Encino, California, Callbox has grown into one of the largest outsourced B2B marketing and sales support providers worldwide, delivering over 1.3 million qualified leads and running 20,000+ lead generation programs for more than 15,000 clients across 60+ countries.
The company’s core offering centers on human-led SDR teams augmented by AI and a proprietary technology stack that includes the Callbox Pipeline CRM and Smart Engage orchestration platform. Campaigns are executed across phone, email, LinkedIn, chat, webinars and digital ads, underpinned by an AI-enhanced, human-curated global B2B database. This Team + AI model is designed to improve appointment rates, shorten sales cycles and increase conversion, particularly in complex, high-ACV B2B sales environments.
Callbox focuses on full-funnel execution rather than one-off lead delivery. Typical engagements include ICP definition, data research and enrichment, account-based marketing, outbound prospecting, lead nurturing, appointment setting, event and webinar promotion, and detailed handoff of qualified opportunities into the client’s CRM or marketing automation platform. Clients gain access to campaign pods comprising SDRs, data analysts, digital marketers and a client success manager who operate as an extension of in-house sales and marketing teams.
With delivery hubs in the Philippines and satellite offices in Australia, Singapore and Malaysia, Callbox supports cross-border growth across North America, APAC, EMEA and LATAM. It is especially strong in software, SaaS, cloud, cybersecurity, fintech, manufacturing, logistics and other complex B2B sectors, and has been repeatedly recognized by G2, Clutch, DesignRush, Outsource Accelerator and others as a top global lead generation and sales outsourcing provider.
