How to enable Remember me functionality in magento?
By default “Remember me” functionality is not enabled in magento. You can enable it form admin, very easily and quickly.
To enable it go in System->Configuration->Customers->Persistent Shopping Cart->General Options->Enable Persistence. From here select Yes from select box and click on “Save Config” button. Now refresh your site and you will see “Remember Me” along with checkbox will appear on login page. If not then clear your cache from Cache Management.