hi guys
i got 1 question, since i lost my iphone 6 plus last week, the problem is i forgot my apple id since seldom download apps on my iphone.
the question is, is there any way to find my apple id email which saved on mac OS? itunes? or iOS Backup file? i only forgot my email address for my apple id.

Thanks

system preference > internet accounts > icloud?

i did try view on system preference or icloud, but sadly only display 1 account only which is account for my macbook air.
My iphone 6 plus is different account. any other solutions?

if your macbook icloud account is different from ur icloud account on ur iphone, i suppose there's no other way to retrieve the email (on ur previous iPhone)..

i see.. ok lo.. Thanks your help yaa..

Have you tried calling Apple support to see if they can somehow assist you on it?

Have you tried https://iforgot.apple.com ? There's a Forgot AppleID link there.

Did you get a replacement iphone? If you have an iTunes backup, you can try and restore it.