denachtenmai,
To be perfectly blunt, desktop software based solutions are a waste of time.
I'm not taking aim at Digiportal here. My comment applies to anyone selling desktop software solutions.
By the time it's reached your desktop, it's too late to do any sort of proper filtering.
The place for filtering is upstream at the receiving server. Once it gets down to desktop level, not only have you just wasted bandwidth on pulling the junk across, but you are also only likely to realistically catch a small subset of what could have otherwise been trashed.