How to turn OFF Organize by Conversation in all mailboxes at once and set it as default?
The Apple Mail Organize by Conversation is not working properly on Mail 6.5 on Mac with OS X 10.8.4 (Mountain Lion).
How to turn off such Organize by Conversation in all mailboxes of at once and leave it off as default for past and new messages?
Mac mini, OS X Mountain Lion (10.8.4), Booting from internal Fusion Drive