Android SMS for iChat integrates your Android text messages with your Mac, through the Apple Messages app, similar to how iPhone users can send & receive text messages using the Apple Messages (previously iChat) app.
First, you’ll need to download the Android app from the Play Store. Once you do so, you’ll create an account using the Android app.
Once you create an account, you’ll follow step-by-step instructions provided in the app to add your account on to Apple Messages application, on your Mac. Once you complete adding your account to Apple Messages app, all your Android text messages and contact list will be synced with Apple Messages app. You can now send & receive text messages with any of your Android contacts using the Apple Messages app.