Hi,
you may have noticed by now I have a brand new Nokia 6310i :-)
This offers both GPRS and HSCSD (high speed data at 28.8k).
Orange suggest that you use GPRS if you want to get fast delivery of incoming text emails but use HSCSD for anything with larger data volumes, such as pictures or email attachments.
So how much use is GPRS (leaving aside the issue of how you filter your email so you only get small messages)?
You can normaly get email alerts via SMS, and polling every 20 minutes via HSDC isn't going to cost vast amounts.
It sounds as if GPRS (at least as deployed by Orange) is for small amounts of data only.
Cheers
Dave R