Experience tells me that people either love this or hate this. I happen to be in the LOVE category, yet avid Outlook users occasionally have trouble making the transition to the Conversation View, especially if they are using Outlook on a daily basis for work and GMail for personal.
Some prefer to have a separate message for each reply or forward because it is more intuitive, more similar to Outlook or other e-mail applications, or because keeping track of replies and forwards to and from multiple parties is simply easier without the threading.
- Click the small gear icon in the far upper-right corner of the window.
- Click Mail Settings.
- About 5 sections down from the top, find the section labeled Conversation view. Change it to Conversation View Off.
- Scroll all the way to the bottom of the page and click the Save Changes button.