A quick overview of email:
The first email was sent in 1971 by computer engineer Ray Tomlinson. Little more than a string of numbers and letters, the message he sent marked the beginning of a new era in communication. Additionally, Tomlinson was the one who popularised the usage of the "@" symbol in email addresses. Gary Thuerk, a marketing manager at Digital Equipment Corp., wrote the first business email in 1978 to alert clients about a new product. By the 1990s, the internet was widely usable on a business level. As interpersonal contact began to significantly change, marketers realised that email might be a great tool for advertising. Regulation modifications were also necessitated by the emergence of marketing emails; the For instance, the Data Protection Act of the United Kingdom was amended to require a "opt out" option in all marketing communications.