I have a Mac using 10.5.8 with Mail and Spamsieve 2.7.7 suddenly can’t delete the spam messages.
I now have a total of 16362 messages, which is constantly rising!!
I highlight the messages and select delete and nothing happens. I have gone into library-mail-mailboxes and spam folder and deleted the messages, but the still show in the spam box when I open Mail. All these messages are slowing down the computer.