Gmail groups all replies with their original message, creating a single conversation or thread, popularly known as Conversation View. Now any user who wants e-mail messages viewable in the traditional way, i.e, all messages and replies split and listed by date sequentially in the mailbox can disable and turn off the conversation view.
Login to your Gmail account.
Click on Settings (find it on the top right corner of the screen).
In the General tab, find the Conversation View section.
Click on the radio button of Conversation view off.
Click on Save Changes button.
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