Case Study: Kaixin001, China's leading social network, achieves 90%+ deliverability and massive email scalability with Message Systems

Leading the Social Space in the World’s Most Populous Country

Kaixin001, one of China’s largest social networks (launched 2008 with 100M+ users and ranked #13 in 2010), struggled to keep pace with rapid growth because its open-source email infrastructure couldn’t scale. Poor deliverability, rising operating costs from many MTA servers, and inflexible messaging systems limited new features and threatened user engagement and competitiveness.

Kaixin001 consolidated messaging onto Message Systems’ Momentum cluster, centralizing operations and replacing dozens of MTAs. This cut OPEX, boosted throughput to support billions of daily messages, improved deliverability to over 90%, and enabled real‑time alerts, mobile and gaming offerings that increased member engagement and unlocked new revenue opportunities.

Kaixin001