Apple IPhone/Ipad Email app Creation

Hi, We desire an email application to be built and replicated to 'OMP, Outlook Webmail for IOS'. This application can be found in the Apple store at the cost of £5.99, so please ensure you review the app before taking on this project. The app simply allows users to have access to Outlook Webmail trough their IOS device fast and efficiently. The app works with Outlook Webmail provided by exchange server. -The App must work with Microsoft Exchange 2003, 2007 and 2010 servers -The user must be able to view Excel, word, PowerPoint, PDF's and picture attachments and download them -Print emails (Using an Airplay printer) -Delete and move multiple emails at once -Full landscape or Portrait email viewa -Support VPN / RSA gateways The key additional feature we would like on our app is to have a multi constraint password set-up if the user would like. So the ability to set up a password consisting of Characters and numbers up to 12 Characters or Numbers which must inform the user of the password strength from Poor>Very Strong based on the complexity. We require this feature as corporate companies, who allow their employees to use the app require a longer constrain password for data protection. Where as the 'OMP Webmail app' only allows 4 numbers. We would require this app to be built to a High Standard with ongoing support work for Bug fixes offered.