Emails are not showing up in mail app on iPhone 6s?

My emails in my inbox randomly disappeared and now no emails show up at all in my inbox. The junk folder and trash work just fine though. Just nothing shows up in my inbox. It's just on my phone too. I have tried removing my email account, restarting my phone, and resetting my network settings. Nothing has worked.

  • My sent folder is not showing all the emails I have sent. Why is this happening? This seems to be random, with some showing and others not. Since Thursday, nothing I've sent out is in the sent folder. More worrying, on my iPhone, the entire sent folder has been emptied.
  • My iphone emails keep showing a J? Ok, everytime i send an email to someone, they keep saying that i have a "J" at the end of the message. Can any genius tell me please how i can stop this on my iphone?
  • Is it possible to update read emails on iPhone before opening Mail app? It's super annoying when my Mail app displays a number of unread messages and when they appear on the lock screen, after I've already opened them on my computer. Is there any way to get it to update read emails, so I don't have to open Mail to get the badge counter to go away?
  • Iphone 5 Apple Mail not sending Hotmail emails? Today, my phone started to not send Hotmail emails from the mail app. It has worked before, but now it gives me the " And Error occurred while delivering this message." I still get emails, I just can't respond. I can respond on the computer, and I can use any other email (Gmail, for example). I have tried deleting the account and re-entering it, but that didn't work. I also tried with a new email, which did not work as well. Both of my Hotmail accounts did not work.