how to look header in yaho mail?

header? do you mean subject? you can just do a search. i believe it is where it says inbox. if you press it, a search option should appear.

 

Yeah the subject is inside the header, I have used yahoo for ages until some Massive ex-president's writer one of his campaign, made me suffer on a wave of a million emails of that,so I end up deleting that and that is the last time one of my former friends will ever get in touch with me, even though, we are never in touch, my girl cut my pinky in two after that massive day... I still feel that cut on my pinky, even though it is perfectly healed up. That was around when the Advengers End Game came out..