How to transfer all yahoo contact details between 2 yahoo email addresses?

Log into the first Yahoo email account





Click on the Address tab





Click on the link to Import/Export (next to Options)





Scroll down to the Export section





Click on the EXPORT NOW button next to Yahoo! CSV:





Save that file





Log out of Yahoo email





Log into the other Yahoo email account








Click on the Address tab





Click on the link to Import/Export (next to Options)





Pick Yahoo! (.CSV)





Click on the BROWSE button and find the file that you just saved





Click on the IMPORT NOW button





You are DONE.