Prompted by this article, I've now installed Hermes and am *really* pleased with it. The configuration options are great, and parallel fetching is very nice. Options like 'fetch smallest messages first' are something that will really help: I'm on dialup modem access, and it's always been frustrating to have to wait for 20MB of photos (or somesuch) before being able to retrieve my other messages. Frustrating no more!
Thanks to Alan/Andrew for programming and investment in *new* RISC OS software. I look forward to future enhancements.