I am using UIActivityViewController to share data from my app. I know how I can create a custom UIActivity subclass and include that on my share sheet.
However, is it possible to customise the system activities? For example, I want to send some data via an email. Can I customise the system one to take my data, subject etc?
I don't want to exclude UIActivityTypeMail and then just create a custom one, I want my data etc going through the system Mail activity.
