disappearing emails

Yesterday all my emails in my Hotmail inbox just disappeared, and I've looked in my other folders to see if they got mistakenly moved to another folder (like the trash), but no such luck. Any suggestions?

I use a Toshiba Satellite laptop, Windows 10. I am a "hunt and peck" two-fingered 'typist.' While composing e mail (Yahoo but it has also happened with G-Mail) i many times hit a wrong key and the mail disappears. No, I do not know which keys. It seems to happen with some of the upper ones but...