Read email/update text field inside app

Is it possible to read the content of lets say the last email in a specific email inbox? I´m developing an app for a company and I would like for anyone to be able to send an email to a specific adress, and then the content of that email would be visible in a text field inside the app. But for that to work the app will have to be able to have access to a specific email. I bet there are other ways of updating a textfield inside an app but this would make it so easy for everyone to be able to update this news feed.

Thanks!