Bangladesh Post Office Khulna Region Job Circular 2015. Khulna Region of BPO has recently published a job circular for the post of Postal Operator and Mail Operator. These jobs are of Third Class Categories’. Only some districts applicants can apply in these jobs. Not every districts are eligible to apply for these posts. There are total 130 vacant posts in Postal Operator and 77 vacant posts in Mail Operator. There is a definite form of application by filling which you will send your application via Registered /G.E.P postal system to mentioned address within April 30, 2015. Don’t forget that the Govt. salary will increase from the next economic year. So it would be better to go through the job circular to know the details information.