Slack · Mark everything above unread
Message actions
Windows · Linux
UMac
UBoth systems use the same combination.
Marks everything above the focused message as unread again — the way to bookmark a long backlog you mean to read from the top later.
- Group
- Message actions
- Keys held
- 1
Enter sends the message in the composer. Shift+Enter makes a new line, and the two can be swapped in settings.
Reading the key names
- Keys joined by + are pressed together: Ctrl+Shift+P means hold Ctrl and Shift, then P.
- On a Mac, Cmd is ⌘, Option is ⌥ (labelled Alt on some keyboards), Control is ⌃ and Shift is ⇧.
- Windows Ctrl usually becomes Cmd on a Mac, but not always — this reference lists both combinations separately.
- With a Korean, Japanese or Chinese input method active, shortcuts built on letter keys may not fire. Switch to Latin input and try again.
- When a combination does nothing, another program has often claimed it as a global shortcut first.
Common questions
Q. What is the shortcut for Mark everything above unread in Slack?
Marks everything above the focused message as unread again — the way to bookmark a long backlog you mean to read from the top later. It is U on Windows and U on a Mac.
Q. Is it the same on Windows and Mac?
Yes, U on both.
Q. How many keys is that?
1 pressed together. The combination sits under Message actions in Slack.