Each time you log in you can choose which web client version you want to use, either Default, Advanced, or Standard.
Default is the client type configured in the Preferences>General page. It can be either Advanced or Standard.
Advanced Web Client offers the full set of Ajax based web collaboration features. The advanced web client works with the newer browsers and the faster internet connections.
Standard Web Client is a good option when internet connections are slow or users prefer HTML-based messaging for navigating within their mailbox.
If your preferred client type is not the default, you can change it after you log in.
1. Click the Preferences tab.
2. In the Overview pane, click General and for the Login Using field, select either Advanced or Standard.
3. Click Save.
The next time you log in, your selection will be the default.