Case Study: CallHub achieves scalable global voter outreach (9M+ calls, 200+ countries) with Plivo

CallHub connects political campaigns to voters with innovative voice solutions

CallHub is a voice and text messaging platform that helps political, advocacy and nonprofit organizations engage voters through personal conversations. Facing the limits of manual dialing, volunteer privacy risks, and the need to reach millions across different countries and carriers, CallHub needed a scalable, reliable way to bring modern voice tools to campaigners worldwide.

By integrating Plivo’s global, low‑latency APIs, CallHub offers power, auto, predictive and patch‑through dialers and a browser‑based caller to protect volunteer privacy and maximize throughput. The solution enabled rapid go‑to‑market and massive scale—supporting traffic growth of over tenfold, 9 million calls in a U.S. midterm cycle and peaks of 600 calls per minute—while expanding campaign reach into 200+ countries.

CallHub

Chetan Giridhar

Chief Technology Officer