Two weeks ago, Apple rejected an app's submission to the AppStore because it "duplicated iTunes functionality." That app was Podcaster, an application that allows you to subscribe, manage, stream, and download podcasts directly to your iPhone or iPod touch. Today, another app has been rejected for a similar reason: it "duplicates the functionality of the built in Mail application."

 The application, called MailWrangler,  is a front-end for Gmail. It has an interface similar to the one found in the iPhone-formatted version of Gmail (the web-based version) that allows the user to start conversations, a feature not available in the stock Mail app. The developer of the application states that the app is similar to the application MailPlane for Mac OS X.

[via WebMonkey]