I found a bug in zoho mail. The problem is in navigation links on emails.

Navigation links are disabled after user coming back to my recent emails after i view old emails (ex : from 50-100 to 0-50).

After come to first page of new emails (0-50) user can't go to old emails using the navigation. It need to be reload again to go old emails again. Hope you will fix this bug soon. 

Thank you.

Best regards

Sahan hasitha.