I've only had my Galaxy S4 for 2 months, and I've gotten so annoyed because I will get a notification that I have x number (e.g., 12) of emails in my in box and then, when I open my email.....I may have only one or two. And....if I DO get a chance to read my emails, then the next time I check it all of my messages will have completely disappeared. What the heck is going on here, and can anyone help me figure out how to fix this problem?