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 post 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 to show the Save icon. Click the icon to save the message for follow up.
To view a list of your Saved Posts, select the Save icon at the top of the channel.