“…The problem of email classification has been addressed by many researchers with different perspectives (Balakumar & Vaidehi, ; El‐alfy & Al‐Qunaieer, ; Fuad et al ., ; Clark et al ., ; Clark et al ., ; Kim & Kang, ; Koprinska et al ., ; Seongwook Youn and McLeod, 2007; Seongwook. Youn and McLeod, 2007; Upasana & Chakravarhty, ; Upasana & Chakravarty, ; Wang & Cloete, ).…”