It can be hard to keep track of long conversations—messages with numerous replies—in your inbox. Luckily, Conversation view groups email threads with the same subject together to make it easier to follow.
If you don’t want to see replies from a conversation anymore, you can ignore it.
With a conversation selected, click Ignore from the Home tab.
Right-click the conversation you wish to ignore and select Ignore.
Click Ignore Conversation.
All the messages in the ignored conversation have been moved to the Deleted Items folder, and any new messages in the thread will be sent there as well.