Reduce duplicate conversations with updates that help you manage external participants and conversation history for emails.
All new replies created (even from external participants like bcc'ed users) will be added to the same conversation thread.
Additionally, when external participants reply, teammates can add them as participants or ignore them thereby not changing the overall list of participants associated with a conversation.
When teammates have added someone as a participant, the reply will continue being tagged with an option to edit participants.
Admins now have the ability to manage conversation history by visiting Settings > Email > Other settings > Remove conversation history from message threads.
When this setting is ON:
When this setting is OFF: