While working on a recent iOS App for a client, I ran into a problem after submitting the app to the App Store. Read more to learn about potential ways to fix 'Invalid Binary - Invalid Signature' errors.
I recently added the ability to an iPhone Application that we have been developing to allow the end-user to send email to their contacts directly from our application. This turned out to be trivial using the MessageUI Kit that Apple provide with the iPhone SDK. Here we detail how we implemented this in our application.