I really had my hopes up...

I've been waiting for a good/better replacement for the old zimbra toaster and this really sounded good.

After starting it up I found that its not a free program but is running in demo mode until you enter a serial number.

From their webpage:

Evaluation version will display a buy reminder three hours after started. You can exit and restart it as many times as you want.

Single user license will let you use a specific mail username in unlimited zimbra mail domains. ($14.99)

Domain license will let you have unlimited users using it, within a specific mail domain. ($99.99)

After entering in my info it crashed twice:
Faulting application zimbranotifier.exe, version 3.0.0.8, faulting module unknown, version 0.0.0.0, fault address 0x001543d8.

On the 3rd time it did stay running and checked my mail successfully.

I really like that it lets you omit or notify for certain folders...I wish it also had the same feature for calendars though.