This will be contained at the end of your User-Agent header, e.g. User-Agent: Messenger-Pro/3.03b4 (MsgServe/2.16) (RISC-OS/5.08) POPstar/2.06-ds.2. Any message you have sent to a mailing list will tell you which version you are running. Use Ctrl-h or to show the headers. You can also check from the Info box from POPstar’s iconbar menu. To switch it on, edit Choices:POPstar.Choices to include the following: # Show icon bar icon IconBar:Y Darren Salt maintains the most recent releases. If you upgrade and have been using SpamStamp (pre-1.02) or BogoFilter, it may be a good idea to reread their installation notes first. You may need to repeat some steps you took when you first installed them.