How to Set Up iMessage on Your Mac Troy Frommer01/24/2013 iMessage is one of the best ways to keep in contact with coworkers, friends and family. With a few simple steps iMessage can be set up on any Mac. A benefit of setting up Messages for Mac is that all of the conversations that are on the iPhone or iPad via iMessage will be synced with your Mac as well. It is important to note that only iMessages are synced to all of the devices, and not regular text messages.Advertisement iMessages that are sent to a user’s phone number and not their Apple ID email address are also forwarded to the Mac. If the user does not sync their iPhone contacts with iCloud, the messages will just appear with the contact’s phone number. How to Set Up iMessage on Mac Go to the Dock and select Messages.Advertisement Go to the top left, click Messages and select Preferences.Advertisement Tap the Accounts tab and select iMessage. Enter your Apple ID and Password and click Sign In. After that step is complete the window should look like the one below.Advertisement The Apple ID will appear along the top with the Enable this account box checked. Also if iMessage is setup on an iPhone the phone number will appear with a check mark applied. This allows iMessages to be sent to that phone number. Another feature that Messages for Mac has is the ability to send IM messages from popular platforms such as AIM, Yahoo!, Google, or even Facebook. This is a nice feature. All of your messages are in one location rather than having to sign into multiple browser tabs. To add an IM account tap the + in the bottom left of the accounts window and enter your login information. In terms of compatibility Messages only comes on OSX Mountain Lion, which is disappointing for users who are on Lion or Snow Leopard. Also there is currently not a way to receive iMessages on Windows.