Sometimes, you might have a certain someone who gets a little, shall we say, overzealous in trying to message you. Since your iPhone and Mac can both receive iMessages, you might get interrupted by the flurry of messages from this certain contact.
While you can block iMessage senders on your iPhone or iPad, it hasn’t been possible in Mac OS X Mavericks until the latest update to 10.9.2, available through the Software Update panel of the Mac App Store.
Now, though, you can block and unblock any contact in your Contacts app with aplomb, right from your Mac.
Launch Messages on your Mac, and then hit Command-Comma on the keyboard, or choose Preferences from the Messages menu. Click on the Accounts tab at the top of the Preferences window, and then click on the Blocked tab in the upper right.
Click on the plus sign in the lower left of the blocked contact window, and then choose the Contact you want to block. If the person you want to block isn’t in your Contacts list, add them manually, first.
You can add as many people to the Blocked list as you like, and you can undo the blocking just as easily. Simply click on the contact in the Block list and then click on the minus symbol at the bottom to un-block that contact.
Pro tip – any contact you block on your Mac will carry over to your iPhone as long as you have your iCloud settings set up to sync. Nice!
Via: OS X Daily