Labels:text | screenshot | circle | letter OCR: Private e-mail systems DaVinci cc:Mail BeyondMail Microsoft Mail. GroupWise Private-to-public gateway options x.400 gateway SMTP gateway MHS gateway Private-to-private gateway options AT&T Mail CompuServe America Online the Internet (SMTP) MCI Mail x.400 Public e-mail systems Figure 1: Private e-mail systems, such as BeyondMail and cc.Mall, are designed for intracompany communication. Public e-mail systems, which include CompuServe and the Internet, are designed for intercompany communication. By providing a gateway, you can allow users to access public e-mail through their private e-mail system