Both　complex　network　and　Web　Intelligence　(WI)　are　novel　and　promising　research　fields.　This　paper　primarily　discusses　how　to　develop　intelligent　applications　in　social　e-mail　networks　(SENs)　with　WI-related　techniques.　It　gives　a　common　architecture　and　discusses　some　important　issues　such　as　creating　SENs　automatically　and　SEN　analysis　for　developing　such　applications.　Also,　this　paper　describes　a　full　process　of　implementing　an　application　via　studying　an　illustrative　example.　©　Springer-Verlag　Berlin　Heidelberg　2006.