For myself personally uaing V11, yes there is some small glitches but overall using the Mac and Windows latest versions seems pretty good to me.and I would recommend upgrading to it.
Ps The Natural Language search works very well from the testing I’ve done with the AI part. See the below blog link for features of eM Client 11
https://www.emclient.com/blog/em-client-11-has-been-released-842
Also see @Michal_Burger thread post link below
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