@djensen47 I did take a quick gander - looks like it drags in a bunch of Google depends. Not everybody is keen on the Goog these days.
Be that as it may; You did not actually answer my question. I don't have a big issue w/forum spam and the stuff I do have enabled seems to be coping. Knock on wood. The few addresses I did check were flagged by each, the bad was missed by each, although emailrep.io seems to be a fair bit more aggressive in giving somewhat dubious reps to known clean addresses. Hence my initial impression based on an admittedly very short look does not leave me particularly enthused as I'd prefer to risk false negatives than false positives.
So, I would be curious to know just what "niche" this targets. Not that having more options is not a good thing. I would be curious if you have done any compare/contrast evaluation on your end cuz I am open to new data. And if it's cool mostly because it's new and offers promise then that is okay too.
Edit: Heh, now I neglected your question and that you need to ask it pretty much answers mine about the testing on your end. I'll have to refresh my memory on that and get back to you, else probably some staff has it off the top of their head sooner...
@julian If so, please give me a knob for opting out of the additional stuff. Which seems to be nodebb's approach in general w.r.t. stuff like this and just dandy by me.