One of my email accounts is served by Comcast. When setting up the account in Mail it automatically added folders I have no interest in using. I try to delete them but it turns out they are “reserved” folders on Comcast so the action fails. Am I stuck with these or is there a method to remove them? Here are the unwanted folders pushed by Comcast Right-click on Chats to delete it Mail app usual warning Confirm delete results in failure This is usually a sign that the folder does not exist in the mail account on the server. Mail says “delete this” and the server says “nothing to delete” so Mail falls to “can’t delete nothing”. There is a known trick where you login to the mail server, create the missing folder, then return to Mail app and delete it. Because there is then a match, the delete action succeeds. So I tried that… Comcast’s default folders Create a new folder named Chats Press OK and systems says uh-uh that’s a reserved folder Same thing happens with the other two folders. Although they are invisible in the main mail folder, I suppose these 3 folders must be buried in other tabs visible from Comcast’s webmail interface — notably Address Book and Text Messaging. I looked but didn’t see a way to make them go away. So here I am wondering if any of you have encountered this problem and found a solution?