Looks good but not seeing too many performance improvements unfortunately. Which is a shame, I much prefer Thunderbird to Kmail UI wise, but when processing th

Looks good but not seeing too many performance improvements unfortunately. Which is a shame, I much prefer Thunderbird to Kmail UI wise, but when processing thousands of messages (deleting, moving, filtering, etc) it slows to a crawl then freezes. Kmail stays responsive. This on 16 core 32 GB machine. But it doesn't look like the cores are used very effectively by TB as opposed to Kmail. For normal usage though it's great. Maybe the next release will focus on performance optimization, in particular multicore.