Why can't I use my alternative Email address?

Ive tried many email look ups for finding out who the person really is but everytime I enter the email the results come back that it cant be found. I know this email address is a working email so why cant I get any information on it.

I can't read my mails in my yahoo mail account :( Is there anyone who knows how can i read my mail using alternative email address?

my mail? i would like to have my old email address back

I have had email address with another provider can I accept it via bt

when i use my email that is darrisbrumm@yahoo.com Im told it not right

I have signed for for a disposable address when I try to save it I can not scroll to save

Hi, the below email is received after added a new alternative email address, but with no link for direct verification, what should I do to activate the new alternative email immediately, tks in advance. >>>>> Start of email notification...

I want to delete my email address and use my alternate email address instead. It will allow me to have an alternate, but I cant get rid of the other email address

I was given a default email address with random words and numbers to upload to my flickr account but I want to use another email address to give people so they can upload pictures too. I cant advertise some random email address and flickr wont allow...