In Notes they come up as dent by the Actual ID, and when you reply they go to the alternate email address.
In Outlook they come up as sent by AlternateEmail by Actual ID, and when you reply they go to the
alternate email address.
basically you need to set the Principal field to the reply to address.
Here is some lotusscript code you can use in a button.
Dim s As New notessession Dim db As notesdatabase Set db = s.currentdatabase Dim mdoc As New notesdocument(db) mdoc.sendto="Put receiver's address here" mdoc.principal = "Put reply to address here" mdoc.body="hello" mdoc.subject="replying to this will go to " & mdoc.principal(0) mdoc.send(False)