Your latest update takes me an extra 4 key strokes to delete email form Spam folder...THANKS
Why not try a beta test first?
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Please elaborate on your report. There are several options for deleting emails from the spam folder. You can press the delete button the keyboard, right click and select delete or click on the delete button on the bottom of the mailbox.
If you feel that these are not working, please use the "Report a bug" option under the help menu. This will provide us with some additional logging information that will be crucial in understanding what is happening so that we can resolve it.