Notes and email connection ?

Hi people. Checking in every now and then has always given me , at least most of the time , a useful bit of info.
At this time I am wondering why my notes in my " notes" icon has had this direct link to my email.
I found " my notes" listed in my email " all mail " box. Just sitting there like I put them there intentionally. I did not. Some individual notations were doubled and tripled in the mail box.
So I erased what is in my mail boxes. I have this in my notes wright? That's where I originally wrote these notes.
Then after erasing the notes in my mail box( all mail ). I find my original notes that I wrote in my " notes" app icon. Gone . Erased.
Had no idea one thing ad something to o with the other. Is there a setting I can use to cut any link between the two locations ?
Was surprised to find this happening although ts not a big deal if you not mind private notes spread all through your mail account.
Thanks

 

Thank you for the reply . Appreciate the confirmation. It seems odd .
Why do that? N N to reply. I'm just questioning the whole idea in general. I'm sure someone can state why Apple should do this.
I write one net and see it show up 15 times in my mail.
I'm an Apple guy but or that alone I will get a Nexus7 instead of a mini i
If that must occur than do not put a embedded note app on the device. J m o
It just don't work.