Ektron CMS400.Net Reference
In addition to automatic email, Ektron CMS400.NET lets you send email instantly to a user or user group from many screens. Your ability to send instant mail is indicated by either
a small mail icon next to a user or group name, as indicated in red below
a small mail icon on the toolbar, as indicated in red below
When you click one or more user/group names then the email icon, the email screen appears, as shown below. Once you complete the screen and click Send, an email is sent to designated users.