Vince,
Thanks for your response. Here's my setup.
6.5.4 Client
6.0.3 Server
OpenNTF.org Mail Experience Template v1.6
We replaced the design of a mailbox that was based on the default 6.5.2 mail template.
Everything seems to be working as advertised. I see the forward and reply icons, which appear in a column between the who and date column.
I'm just wondering if there is anything that does not work properly or works differently because we are using the 6.0.3 server. We plan to upgrade all of our servers to 6.5.4 (or higher), but our resources and project time are so limited that it may be middle of Q4 before we can get that done.
Overall though, testing has gone very well and we will be rolling the template out to approximately 800 people soon.