I have done a lot with sending e-mail notifications. If you do this, I recommend setting up a user group that you send the e-mail to and not hardcoding the names in the code. I have also done something similar and posted it directly to the users outlook calendar (this would work if you set up a group calendar)
Dim outobj As Outlook.Application
Dim outappt As Outlook.AppointmentItem
If Len(Me.txtDateFollowUP & ""

> 0 Then
Set outobj = CreateObject("outlook.application"

Set outappt = outobj.CreateItem(olAppointmentItem)
With outappt
.start = Me!txtFollowUP & " " & TimeValue("08:00"

.Duration = "15"
.subject = "Follow Up Call Scheduled with " & Me.Customer
.ReminderMinutesBeforeStart = "15"
.ReminderSet = True
.Save
End With
Set outobj = Nothing
msgbox "Appointment Added to Outlook!"
End If
Hope this helps