SpamSieve causing mac to slow and stall

I’ve been having issues with my mac slowing – showing the whirling wheel or wait – and at times stalling enitrely, with holding the power button until it shuts down the only solution. It seems that SpamSieve is causing this (at times the SS icon will bounce on the deck as if trying to restart).

Is there anything to be done to solve this other than deleting SpamSieve, which I’m loathe to do?

I’m running ver. 2.9.24 on El Capitan 10.11.5.

The SpamSieve Dock icon bouncing probably means that it’s not doing anything because it’s waiting for you. Please click to see what it’s trying to tell you and have a look in Activity Monitor and see what is says about the CPU of different apps.