If you need to understand how email came into existence, one can make a timeline diagram. As shown below, the first email was ever sent by Ray Tomlinson in 1971. A few decades later, AOL emails were launched, and in 2004, Google launched its very own Gmail that revolutionized the entire professional and personal communication. As per the below timeline, 200 billion email messages are sent every day. These timelines are a great way of understanding what happened in the past and plan the future. Usually, company managers use these timeline diagrams to understand the projects and plan out the tasks. It should be noted here that a timeline is a very important part of a project proposal as it shows the chronological order of events that one plans to do in the project. It is supposed to give the reader a broad overview of the project at a glance.
