This study entails the subject of (Nojob and Najabah) in the era of Mamluks, in spite of the abundance of studies that have done about the Post and other related things, this topic didn’t have its own value in research and studying until now. Its importance lies in that (Nejabah) was a rapid communication mean between Cairo and the other Egyptian regions, on one hand, and between it and the representative offices in the Hijaz and the Levant, on the other hand. They could cut long distances in the desert in a short time compared to any other means. The research has been divided into many points ; i.e, the definition of “Nojob” in the language and in terminology, the shape and clothing of (Najabah), names of some workers in it, the missions of them in details, the difficulties they face, income resources, then concluded the results and ended by mentioning names of some (Najabah)