It would be really nice if you could add a tab called SPAM in the account settings view, where one could set custom spam handling settings as well as the account specific spam filtering level.
This can be achieved via Sieve Filters, which you guys implemented beautifully already! :)

A request for advanced sieve filters was started here already:
https://afterlogic.uservoice.com/forums/106725-ideas-for-afterlogic-products/suggestions/6710580-sieve-filters-improvements

We love Afterlogic in our NPO orga because it is simple and provides most of the features that are required to work with messages.
The reason why we did not go for pro was because it lacks SPAM settings and advanced (sieve) filter functionality, as well as a user self service password reset (not change!) features when connected to an LDAP based mailservers.