In this paper, we describe ECPIA (Email-Centric Personal Intelligent Assistant), which provides Web-based environment to support the activities of a major time sink of our daily lives – the processing of emails. The design of the system is with an agent-based infrastructure. In addition to capabilities that an email client should provide, the novel features in ECPIA as a personal assistant include (1) user behavior analysis for publishing bulletins, making appointments, multi-filters and prioritizing emails; (2) ontology and multiple filtering agents based email management for blocking junk mails