The advantages of a centralized mailing department are : 

(i) High degree of specialization: It makes certain that specialization in the mailing service is ensured. Specialization enables precision and rapidly in the work. 

(ii) Uniformity in standard: It maintains consistency in the standard of quality and approach. This system ensures standardization of all correspondence made by the business hours. 

(iii) Better quality of work: It increases efficiency of work in their entails good output. As a consequence the degree of work become better and the organisation attains a good reputation. 

(iv) Better supervision and coordination : A well trained and expert supervision may be appointed to lead the dispatching department. Better supervision would ensure an ever and quick performance of mailing operations. 

(v) Saving time and money: Mailing operations can be methodical under this system. Proper methods can be set forth and brought into union with mailing operations. This would make for savings in time and money. 

(vi) Increase in efficiency: It increases efficiency of employees as they specialize in looking after the correspondence only. 

(vii) Keeping away duplication of work: All types of corresponding (inward, outward and inter department are changed to the central mailing department. As a result duplication of endeavor is stopped. 

(viii) Use of modern equipment: The mechanization of the mailing dept, is possible under this system. Various labor saving devices (folding and sealing machines, fracking machines can be used in the best way.