Gmail now offers users the ability to switch between conversation view and the traditional message-based unthreaded view. When a user switches to unthreaded view, messages are no longer grouped together into a conversation, and each message is shown as a separate entry in the inbox. The inbox is still sorted in reverse chronological order.
Standard, Premier, Education, Partner Edition and Google Apps for Government
All languages supported by Gmail
How to access what's new:
This feature is only available to domains whose administrator has enabled the ‘enable pre-release features’ checkbox in the Control Panel.
In Gmail ‘Settings’, go to the new ‘Conversation View’ section, select to have that view on or off and click ‘Save changes’.
Note: The mobile web-based view of Gmail will still be threaded, as will the Gmail Mobile Client app. However, if you are using a Blackberry, Windows Mobile, iPhone, or Android device, you can access Gmail unthreaded in the native mail clients of those devices using Google’s sync tools.
For more information: