Doesnt work for my needs

I just started using this app because I heard it can filter my exchange server spam on my iPhone. On the first day it was great. By the next I was getting more spam than ever. No spam has unsubscribe feature. I tried it with hotmail and it works great. I get loads of ads on that one, and I am able to easily unsubscribe. I need to filter exchange server! Im getting hundreds of spam each day! Please add a filter that will stop the spam before hitting my phone. Im able to stop it on my work pc with outlook filters.

Bobbinapin about Email - Edison Mail, v1.4.3