Android: Registering Intent Filter to open email attachment with my app

Question

I have an app that generates custom file types (.sor). Inside the app I have a feature to send an email with one of these files attached. I also have an intent filter to all

Answer 1

I've solved this, mostly by shooting in the dark and without really understand WHY what I did solved it, but here is what I have for my intent filters in the manifest now, where ".sor" is the extension of my custom file type. This works with all email and file management apps that I have tried, including K-9 mail and Astro: