How to Block the Sending Mails to a Particular Domain in Android?

Question

Hai Friends, I have created an Application which sends email to any domain, but my wish is, ie i want to restrict the user to send mail only to a particular Domain, I am very struggling to implement this. The code for sending Email is given below, can u pls tell me what change i have to do to achieve my target mentioned above.

Intent sendIntent;

sendIntent = new Intent(Intent.ACTION_SEND);
sendIntent.putExtra(Intent.EXTRA_SUBJECT,
"Test");
sendIntent.putExtra(Intent.EXTRA_TEXT,
"Hy Testing");
sendIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse("file://"
+ file.getAbsolutePath()));
sendIntent.setType("image/jpeg");
startActivity(Intent.createChooser(sendIntent, "Send Mail"));

Thanks Tilsan