Hi. I have noticed that sometimes when viewing mail on my MAC (Studio M1 128 G memory 8 TB storage, latest Mac OS Tahoe 26.3) that often when moving the cursor around on the screen viewing mail that the cursor changes to an upwards pointing triangle. When I want to go to the next mail item I have to click on the header bar to get it to change to the normal cursor before it will allow me to make my next selection. A small annoyance but still.
often when moving the cursor around on the screen viewing mail that the cursor changes to an upwards pointing triangle
That sounds like an OS Mouse setting.
I haven’t personally seen that on my M1 or M2 Pro with OS 26.2, so maybe “try uninstall and reinstall the app” with the latest eM Client V10.4.4756 from the release history page and see if that helps.
Make a backup first via “Menu / File / Backup” in case you need to restore for any reason. You can see when the backup is complete in Show Operations via clicking the dropdown on the right of Refresh.
Then once the backup is completed, “close eM Client” and go to “Finder / Applications” and drag the app to the bin. Then download the latest V10 and reinstall and see if that fixes the problem.
If you don’t already have V10 then reinstall the same version you had previously from the release history page and see if that fixes it. Or upgrade to V10 if you don’t already have it.