I have all my email accounts set to "store and forward" to my Blackberry. I use T-Mobile, and didn't like the delay using the Web Client to poll my mail, so I just setup a forward for ALL my accounts (7 I think) and alll works great. Have been using this solution for over a year now!
Crackberry User and Addict.
7250 on Verizon w/EVDO and 4.0.2 Update (Active)
7290 on T-Mobile (Retired)
T-Mobile 7230 (Retired)