The email encryption market is anticipated to grow from $2.3 billion in 2018 to $5.8 billion by 2023, with a 20.0% CAGR, driven by segments such as on-premises and cloud deployment types across various industries. North America is projected to hold the largest market share, while the Asia Pacific region is expected to expand the fastest. Key vendors include Micro Focus, Symantec, Cisco, and Trend Micro, with strategies focused on product innovation and partnerships.