You can hide or delete the history of a direct message in Google Chat and Gmail. You can only hide or delete a direct message with another person.
- Hide conversation—Removes your copy of a conversation. It doesn't remove the conversation from other participants' views. If you hide a conversation and then chat with that person again, your chat history reappears (if it's turned on).
- Delete conversation—Permanently deletes your copy of a conversation's history. It doesn't delete the conversation from other participants' history. When you delete a DM, it deletes the DM content, but the data that indicates the instance of the DM remains in the backend.
Hide a direct message
Important: You can’t hide a group message with 2 or more people.
- On your Android phone or tablet, open the Chat app
or Gmail app . - In Gmail: ;At the bottom, tap Chat .
- In Gmail: ;At the bottom, tap Chat
- In the bottom navigation menu, tap Direct messages .
- Tap and hold the person's name Hide conversation.
or Gmail app 
. 
.
.
Hide conversation.Delete a direct message
Important: You can’t delete a group message with 2 or more people.
- On your Android phone or tablet, open the Chat app or Gmail app .
- In Gmail: At the bottom, tap Chat .
- In Gmail: At the bottom, tap Chat
- In the bottom navigation menu, tap Direct messages .
- Tap the person's name.
- At the top, tap the person's name Delete conversation.
- To confirm, tap Delete.
Delete conversation.To delete a single message instead of a conversation, go toEdit or delete a message.
