Looking at your operations, you may have to reach out to similar organizations to understand it better.. plus the work that is being done by your mail room also will depend

Receive, sort, process, bag, label and deliver all incoming and outbound mail Stuff, label and post large mailings Provide mail pick-up and delivery services to and from the Country specific Post Office. Provide means for employees to mail business related packages only Research mystery mail and deliver as per site req. Sort and deliver all mail received by site established schedules on the same business day Pick up departmental mail as per site requirements. If Yes, please specify site requirement in bottom cell of this category. Responsible for postage machine, scales and sorters, meter rental Maintain accurate information on Client and non-Client employees Please add descriptions, frequencies provided and SLA"s for any other services provided in this category. Coordinate with courier agency on daily basis to ensure all docs are dispatched same day To verify the monthly/weekly bill received from Courier agency & process for payments