Replacement mail application?

[cpsully69]

I'm using the T600 w/Verizon service. I use Verizon's Sync service/utility that synchronizes my Outlook on my Desktop PC to my T600 over the wireless network.

It works great, the Sync brings over my inbox messages and all the subfolders. My only complaint is that I have some "wizards" that automatically place certain messages into certain subfolders. The base mail client in the T600 doesn't have any indicators showing which subfolders have new messages.

I currently need to go into each subfolder after a sync to see if there are new messages.

Has anyone come across a good replacement for the base mail application that has this feature?