Download of DeskMail 1.0 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This free software for Mac OS X was originally developed by Rocky Sand Studio Ltd. The software is included in Communication Tools. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
DeskMail is an application that lets you access Gmail straight from your desktop. Using this program, you will enjoy the advantages of using Gmail in DeskMail, separate from your browser. You are provided with a badge dock icon with an unread e-mail counter. You can receive and customize unread e-mail notifications.
You may want to check out more software for Mac, such as Zimbra Toaster, PageSender or Mail to ToDo X, which might be similar to DeskMail.