when I enter email in search window to look at past history , I get a reply saying the email can not not found.

I am having difficulty accessing my email history.

 

I have also tried a different computer with the same results.

 

Thank you

My friend and I want to know when we started messenging each other,,, is here a past history of our messages?? and how do I get there to view this,  Thanks in advance, Jess,