When people reply to an email, Gmail groups responses together in a single conversation with the newest message on top. A conversation breaks off into a new thread if the subject line changes or the conversation reaches more than 100 messages.
In some cases, you can change this default view. To change these settings:
- Open Gmail.
- In the top right, click the gear icon .
- Click See all settings.
- Staying in the "General" tab, scroll down to "Conversation View." Choose "Conversation view on" or "Conversation view off."
"Conversation view on" will keep replies together with their original message.
"Conversation view off" will receive a new email in your inbox each time you get a reply.
- At the bottom of the page, click Save Changes.
To see all the messages in a conversation, click the "Expand all" button .