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.　©　Springer-Verlag　Berlin　Heidelberg　2006.