Saving a message helps you mark messages for follow up. Your saved messages are personal, and can’t be seen by other users. There’s no limit to the number of posts you can save.
One way to use saved messages is to mark messages you want to respond to later. You can save the message in the list of Saved posts, refer back to it later, and once complete, you can remove it from the list.
To try it out, hover over a message and select the Save icon to save the message for follow up.
To view a list of saved posts for your current team, select the Saved posts icon in the Global Header. In Mattermost versions up to 5.39, the Saved posts icon is located at the top of the channel.