OS X Mountain Lion brings iMessage to Mac as well, thus enabling Apple products to gel further with each other. With iMessage, you can send messages to anyone who has an iPhone, iPad, or iPod touch with iOS 5 or later, or a Mac with Mountain Lion.
Messages for Mac has an elegant design, which makes it easy to follow conversations. Your current conversations are listed on the right and ongoing conversations on the left, with the most recent on top. Messages stores your message history, so you can pick up a conversation where you left off.
To start a conversation, type a friend’s name in the To field and Messages works with Contacts to autocomplete it — no need to add friends to a buddy list. You can send iMessages to a phone number or to an email address associated with an Apple ID.
You can also send messages to a group. Just type each name in the To field. When friends reply, everyone sees the responses.
With iMessage delivery receipts, you know when your messages have been delivered. You also have the option of read receipts – you can let friends know that you’ve read their messages by turning on read receipts in Messages preferences. iMessage informs your friends when you’ve read their messages.
The best part of iMessage is that your conversations are kept up to date on all your devices. You can start a conversation on your Mac and pick up where you left off on your iPhone, iPad, or iPod touch. And you don’t have to worry about security because iMessage uses end-to-end encryption so your conversations are private and secure.
iMessage allows attachments of up to 100MB, enough to allow you to send high quality photos, full HD video or documents.
There is a search field to quickly find recipients or messages you sent. You can forward a message to a friend, click the message to highlight it and then choose Forward from the contextual menu. You can even select multiple messages.
When someone sends you a new message, you receive a notification in the Notification Center even when Messages is not running.Messages supports the traditional instant messaging services supported by iChat, including AIM, Yahoo!, Google Talk, and Jabber.
Switching from a conversation to a video call is easy. Click the FaceTime button to open the FaceTime app and initiate a video call with your friend.