Since upgrading to iOS10 I have hit a problem on both my iPhone 6S Plus and iPad Mini 2 which suggests that the problem is software related. In essence if I am in an email and want Siri to set a reminder to look at this email at a later time it used to set a reminder and attach the email as a link to open; now, Siri either doesn't recognise the email or it links the entire mailbox to the reminder. As a feature this is very useful but at the moment seems to be broken.......and I can't seem to raise a bug request for this as am not a developer.