NOt sure what you mean by mechanism, but I have included some of the code below - hopefully that will answer your question. this is all linked to a command button.
thanks
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Set objOutlook = New Outlook.Application
Set objEmail = objOutlook.CreateItem(olMailItem)
' ***creates and sends email
With objEmail
.TO = EMailAddress
.Subject = "Course Reminder - " & CourseName
.Body = "Hi " & FirstName & Chr(13) & Chr(13) & _
"This is a reminder that your course - " & CourseName _
& " is starting at " & StartTime _
& " today" & Chr(13) & Chr(13) & _
"If you are unable to attend, please let us know as soon as possilbe" & Chr(13) & Chr(13) & _
"Thanks" & Chr(13) & Chr(13) & _
"Training People"
' .Send
.Display
.GetInspector.WindowState = olNormalWindow