To be honest I do this every single day. I use reminders really I do but sometimes I just want to have it in my inbox because that's what I use for my To Do list daily.
I looked into applications that allow you to send yourself e-mail there are such applications on every phone platform but they have a problem. They either require to hook up into your email application on your phone or worse they ask you for your credentials including your password which I don't want to give to some application I just downloaded.
I did discover a neat trick for this however. On the iPhone I can easily create custom keyboard shortcut and you can do the same on Windows Phone or Android. I've set up a shortcut so that I can type just a simple phrase like @@ into the To field and it expands to be my e-mail address. So if I want to send myself an e-mail, I just type in the To field