Go for Gmail 2.4

This program provides you with a quick and simple way to check your Gmail account, eliminating the need to use your default web browser.

The application lives on your Menu Bar from where you can read new messages from your Inbox, compose emails, and search old correspondence.

You can choose between two view modes (Desktop or Mobile), enable sound notifications if necessary, and configure interface appearance settings according to your needs (change font size, adjust window opacity level, etc.). All of these settings can easily be configured even by a novice Mac user.

The application communicates well with the Notification Center tool (Mac's default notification service tool). It immediately displays a notification under the Menu Bar as soon as you get a new email in your Inbox. What's more, the utility shows the amount of unread messages on your status bar.

In my testing, Go for Gmail worked flawlessly. It didn't slow down the performance of my Mac while running on my Menu Bar. The app was very simple to configure and immediately let me know when I received a new message.

Briefly, this program proves to be a smart addition to your collection of Mac apps if you're using your Gmail account on a daily basis. It's effective, simple to handle, and free.