Sparrow for iPhone it's all you can ask of an email client. Its interface invites simplicity but it is not boring at all thanks to all the secrets that the application hides.
Sparrow supports IMAP accounts (Not POP yet) so you can configure your Gmail, Google Apps, iCloud, Yahoo, AOL, Mobile Me or even manually customize the IMAP parameters to synchronize other accounts.
If you synchronize Sparrow with your Facebook account you will quickly obtain the profile photos of your contacts which is much more visually appealing. The application is divided into three panels (accounts, folders / labels and messages) that you can navigate through them using buttons or with intuitive swipe gestures.
If you have several predefined email accounts, you can view them individually or go to the unified inbox to see all emails at once. If you want to locate a specific email, Sparrow offers you a search engine to which you can even set filters.
From Sparrow for iPhone we can alsoAdd photos while writing an email which saves us from having to go to our photographic library to write the email
With these and many other features, Sparrow will become your main email client on the iPhone and you will leave aside the official application included in iOS.