Just because you want to save an email attachment on your phone doesn't mean you always want a local copy. What if you're running out of space? That won't be an issue if you're using the latest version of Gmail for Android; the newly updated app lets you save files to Google Drive, making it easy to fetch them later on most any Drive-friendly device. The upgrade also gets you to the navigation menu through a simple swipe gesture, and there's both improved right-to-left language support (think Arabic or Hebrew) as well as explanations for why messages land in the spam folder. It may take a few days for the new app to hit your phone or tablet, but it should be worth your patience if you prefer to fetch important documents from the cloud.