Inter office memorandums are usually sent within the office and they are used as tools for communication within the office. The memos usually contains the four standard parts and they are appropriate because they contain exact specification of what is needed
Explanation:
When an email is sent it cannot be ensured that the received person took a note of it or not and in some cases it can even remain unnoticed. In memos it contains the detailed specification and the matter is conveyed efficiently and in an effective manner
Electronic mails are also important and they can also be used but they are not reliable and hence using interoffice memos are essential. Both the formats of the mail and the interoffice memos are same but they are dependent on the software that they are used.