What is the point of downloading and installing a program that is absolutely nothing more than a browser that accesses only one page?

That's all this program is. It's a browser (just like Safari, Firefox, IE etc.) but all it accesses is gmail. In otherwords, what you see in Mailplane is the *exact same thing* you see when you access gmail from your web browser.

There are one, MAYBE two interesting features, but everything else you can already do right in gmail... in your web browser... what is the point of having a second program running that does the EXACT same thing as another program??? I don't get it.

It gets 5 stars for being slick, stable and well made. But it serves no purpose. it's just a mini brower, that's it. Why bother? Just open a new tab in your web browser, log into your gmail account and... you have the exact same thing.