What are advantages of Memorandum?

Memos have been a popular way for commuting for over a century now. This is because they have many advantages as seen below:

• They are a very cost effective way of mass communication. And their transmission is also very cheap.
• Another advantage is its simplicity. They are very simple to write and understand.
• Memos tend to be brief and to the point. They also reach a lot of people. So they are very time-saving as well.
• They also serve as evidence in case of a dispute.