SiOutlook is an iOS app that permits to manage, with several e-mail accounts, your e-mails that can contain images, documents, video and audio files saved in an Attachments section, always available to the user with the relative buttons. You can receive your e-mails even when the app is not executing, updating constantly the app icon with the number of received e-mails. Everytime you insert a new e-mail address, the address book will be automatically updated in order to simplify your friend's info search. Try it, because it's ease of use, efficient, fast: it's a ready-to-use app, it's handy.
Available for iPad and iPhone on Apple Store