Your question is answered very well here email: Which are Intent. ACTION_SEND return values? Basically there is nothing specified, anything can happen.
That is up to the user. Design your app such that you do not care if the user sends the email or not. If the nature of your application is such that you absolutely have to know whether the email is sent, embed email sending straight into your application.
There is a JavaMail port for Android floating around somewhere, IIRC. This may require you to get the user's email account and password, which they will not want to give you. Hence, I recommend that you design your app such that you do not care if the user sends the email or not.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.