
Marking a message as unread can help remind you to return to it later in Chat. This will presumably be available in both the standalone apps and integrated Gmail experience.

In the web client, you can highlight a conversation in the left sidebar and open the overflow menu, or hover over an individual message for the top-right control pill. It appears between “Start a new chat” and “Pin” in the list below.

It will also be available after tapping a contact’s name in the top-left corner. On mobile, long pressing on a conversation will reveal a new “Mark as unread” option alongside Add reaction, Copy text, and Forward to inbox. This capability is already found on competing team messaging solutions, and doubles as a light reminder system.

Google is rolling out a simple but rather useful ability to “mark as unread” in Chat.
