How find someone on yahoo messenger without a full email address?

I keep receiving explicit messages from Yahoo messenger to my phone from email datheat1@yahoo.com about my fiance and I from someone we believe to be her ex. I did an email reverse search through a paid service and received a name we've never heard of...

How do I find out information on someone with only their email address? Where from, age, interests, and so on...all I have is yahoo email address...Where is that page, like when you view their profile when adding them as a friend on messenger???

Someone wanted an invite on yahoo messenger but showed no picture or email address How can this happen and how do i find out about this person

We wanted to get together for real but we lost contact before we could. All I know is her old yahoo messenger ID , her age , her 1st name and what she looks like. Ironically that's all she knows about me as well. My I'm hoping for a unique answer that...

i was trying to add an email address to my address book in yahoo and made a mistake.Before i noticed the mistake it was already saved and i couldn't find a way to delete it can someone please help. this person is in my address book only not in my messenger...

My friend from the other side of the world dissapear, I send messege and email to her but have no reply, I dont know her home address and phone number or anyone from her friends or family, only thing I can know about her is her email address. Is there...