Migration from GoDaddy to Zoho mail

Migration from GoDaddy to Zoho mail

Hi ,

I am using zoho services from past 2 years.
I am trying to migrate all the emails from Go Daddy to for zohomail account using the migration tool.

i tried with imap method,its not working.
when i try it with pop, then only the emails from the inbox of go daddy mail account ( not other folders), is getting transferred, how can i transfer all the folders from go daddy to zoho.

and also the emails which are coming from go daddy are like new unread emails ( is there any where i can differentiate from read and unread emails)

Your immediate reply is highly appreciated.

Thanks,
Sandeep