kmail question

I suspect this is not a bug but just something I don't know how to turn off.

Anyway, I use kmail 4.14.1 on my debian jessie 32 bit system, set to pop3, no 
html preference, and it works just fine  I have been using it and kmail 1 
before that for a long time. I can't remember when I switched to kmail 2 but 
it was several months ago.

Now here is my question:  

Every now and then, probably 5 or 10 times a week, I get a message to the 
effect that kmail is checking my system or some such. In order to get to my 
email, once this message appears, I have to go through a small pop window 
which shows two spam emails with  three options:

Keep Left  Keep Right  Keep Both 

If I click on one of those three buttons, the next email comes up and I have 
to do the same thing, and continue doing the same thing until I have gone 
through all my spam email.  This is a bother and I would like to turn off 
whatever function is giving me the choice to "keep left, keep right or keep 
both".  I don't see what function is serves.

I have bogofilter showing in the spam wizard window.

Any suggestions?

Thanks

John
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