android send email

gistfile1.java

Uri uri = Uri.parse("mailto:");
        Intent intent = new Intent(Intent.ACTION_SENDTO, uri);
        intent.putExtra(Intent.EXTRA_SUBJECT, " 云盘分享文件：" + emailSubject); // 主题  
        intent.putExtra(Intent.EXTRA_TEXT, emailBody); // 正文  
        startActivity(Intent.createChooser(intent,
                "Select the mail application"));