We have tested the solution against GW 7.0.2 (build date: 06/04/07). This solution is working in our environment although we think it require enhancement to specify the charset type.
This solution use fixed “charset=iso-8859-1” and we think it should let end user to change the charset type for the META tag. Our GroupWise encoding is set to IS0-8859-15, you can change the message view encoding by right mouse clicking on the message body then select a encoding.
You can also set the default send message encoding by changing the Tools – Options – Send – Send Options – MIME Encoding.
Whats is your encoding? Please let us know if we have misunderstood you. To clarify the issue, please provide steps to re-produce.