Installing Apps From Attachments Is Not a Good Idea

Unlike the iPhone and Windows Phone 7, Android provides a way to install applications that are not in the Android Market. The capability is not enabled by default, so users have to explicitly go into the Android settings to enable the ability to install applications from other sources. We know that carriers or handset manufactuers can remove this capability, as AT&T did with the Motorola Backflip, and I will not be surprised if other carriers remove this feature.