I am unable to access the import and export option for my Gmail account. When I export only the filters are imported to my other Gmail account. There are no emails in them.
Get mail from other accounts
How to Import Filters From one GMail Account to Another
That can be done by enabling
Filter import/export feature in Settings->Labs in your Gmail account. Once enabled, you will see new Export and Import buttons/links on Settings->Filters page.
Here's description by Google http://gmailblog.blogspot.com/2009/03/new-in-labs-filter-importexport.html
I have enabled that lab and tried but it dint workout. Only the folders got imported but there are no mails in the filter folders;. Could u please let me know the reason why it happend so
This is kind of a pain. You can use the Thunderbird method I outlined here:
After downloading your Gmail to Thunderbird, you can add a second Gmail account with IMAP in Thunderbird and drag and drop emails to your new account.
The filter import/export feature only exports the filters themselves. But that's good, because IMAP doesn't import/export filters.