| A | B |
| Annotate | Write comments related to the content of a message |
| courier service | A private mail delivery company |
| customs | Government taxes or duties on imported items |
| optical character reader (OCR) | Electronic equipment that scans or reads text in a form that can be used by computers |
| postage meter | A machine that prints postage in the amount needed |
| prioritize | Place in order of importance |
| referral slip | A document that accompanies items sent to another person and indicates a requested action |
| routing slip | A document attached to an item that shows the names of individuals to whom the item should be sent |
| synopsis | A general overview or summary |
| telegram | A message sent using a private mail service e.g. Western Union |