#8 Search your messages, not just your mailboxes:

It’s pretty reasonable that you got a mailbox that is so large that you won’t get to find the contact details or the messages that you pretty need the most. Now Apple has simply changed the scenario with the search command or the shortcut using the command F. According to Apple, the search works in the same way as Safari browser handles the inline messages.

#9 Greater control over personal information privacy:

Usually the tech world is interested in gathering their beloved user’s personal data and so is Apple who used to gather plenty of user information in their app stores. But now the tech giants itself has bought strong controlling policies over passing and using of user information. The OS has introduced certain Security and Privacy system preference settings where users are repeatedly asked whether to or not to send their privacy and account information’s to untrusted apps. The OS X Mountain Lion also have good and strong privacy controls over users contacts, Twitter accounts and Facebook accounts.