diff --git a/CHANGELOG.develop b/CHANGELOG.develop
index 148d17c94..57f417beb 100644
--- a/CHANGELOG.develop
+++ b/CHANGELOG.develop
@@ -3238,6 +3238,8 @@ Other:
   - ~SPC m )~ to add reaction (thanks to Swaroop C H)
   - ~SPC m (~ to remove reaction (thanks to Swaroop C H)
   - ~SPC m t~ to open message thread (thanks to Swaroop C H)
+  - ~SPC m T~ to open all threads in workspace (thanks to wang-d)
+  - ~SPC m u~ to open all unreads in workspace (thanks to wang-d)
 - New layer variable =slack-spacemacs-layout-name= to customize the name of
   the custom layer for Slack buffers (thanks to Benjamin Reynolds)
 - New layer variable =slack-spacemacs-layout-binding= to customize the key used
diff --git a/layers/+chat/slack/README.org b/layers/+chat/slack/README.org
index 8fa013e5d..899e8eee6 100644
--- a/layers/+chat/slack/README.org
+++ b/layers/+chat/slack/README.org
@@ -64,34 +64,37 @@ By default the values are:
 
 * Key bindings
 
-| Key binding   | Description                             |
-|---------------+-----------------------------------------|
-| ~SPC a c s d~ | Direct message someone                  |
-| ~SPC a c s g~ | Join a group (private channel)          |
-| ~SPC a c s j~ | Join a channel                          |
-| ~SPC a c s q~ | Close connection                        |
-| ~SPC a c s r~ | Join a channel, group, or direct messge |
-| ~SPC a c s s~ | (Re)connects to Slack                   |
-| ~SPC m c~     | Embed mention of channel                |
-| ~SPC m e~     | Edit message at point                   |
-| ~SPC m j~     | Join a channel                          |
-| ~SPC m d~     | Direct message someone                  |
-| ~SPC m m~     | Embed mention of user                   |
-| ~SPC m p~     | Load previous messages                  |
-| ~SPC m )~     | Add reaction (emoji) to a message       |
-| ~SPC m (~     | Remove reaction (emoji) to a message    |
-| ~SPC m t~     | Show or create thread                   |
-| ~SPC m q~     | Quit Slack                              |
+| Key binding   | Description                              |
+|---------------+------------------------------------------|
+| ~SPC a c s T~ | Show all threads followed in a workspace |
+| ~SPC a c s d~ | Direct message someone                   |
+| ~SPC a c s g~ | Join a group (private channel)           |
+| ~SPC a c s j~ | Join a channel                           |
+| ~SPC a c s q~ | Close connection                         |
+| ~SPC a c s r~ | Join a channel, group, or direct messge  |
+| ~SPC a c s s~ | (Re)connects to Slack                    |
+| ~SPC a c s u~ | Show all unread in a workspace           |
+| ~SPC m (~     | Remove reaction (emoji) to a message     |
+| ~SPC m )~     | Add reaction (emoji) to a message        |
+| ~SPC m c~     | Embed mention of channel                 |
+| ~SPC m d~     | Direct message someone                   |
+| ~SPC m e~     | Edit message at point                    |
+| ~SPC m j~     | Join a channel                           |
+| ~SPC m m~     | Embed mention of user                    |
+| ~SPC m p~     | Load previous messages                   |
+| ~SPC m q~     | Quit Slack                               |
+| ~SPC m t~     | Show or create thread                    |
 
 The following bindings are provided to mimic bindings in the official Slack
 client.
 
 | Key binding | Description              |
 |-------------+--------------------------|
-| ~SPC m @~   | Embed mention of user    |
 | ~SPC m #~   | Embed mention of channel |
 | ~SPC m )~   | Add a rection            |
+| ~SPC m :~   | Embed emoji              |
+| ~SPC m @~   | Embed mention of user    |
 | ~SPC m k~   | Join a channel           |
 
-In insert state, one can also use ~@~ and ~#~ directly without the leader key
-prefix.
+In insert state, one can also use ~:~, ~@~, and ~#~ directly without the leader
+key prefix.
diff --git a/layers/+chat/slack/packages.el b/layers/+chat/slack/packages.el
index 2bde12ec3..b1f102b4a 100644
--- a/layers/+chat/slack/packages.el
+++ b/layers/+chat/slack/packages.el
@@ -58,36 +58,40 @@
     :init
     (spacemacs/declare-prefix "acs" "slack")
     (spacemacs/set-leader-keys
-      "acss" 'slack-start
-      "acsj" 'slack-channel-select
-      "acsg" 'slack-group-select
-      "acsr" 'slack-select-rooms
+      "acsT" 'slack-all-threads
       "acsd" 'slack-im-select
-      "acsq" 'slack-ws-close)
+      "acsg" 'slack-group-select
+      "acsj" 'slack-channel-select
+      "acsq" 'slack-ws-close
+      "acsr" 'slack-select-rooms
+      "acss" 'slack-start
+      "acsu" 'slack-all-unreads)
     (setq slack-enable-emoji t)
     :config
     (dolist (mode '(slack-mode slack-message-buffer-mode slack-thread-message-buffer-mode))
       (spacemacs/set-leader-keys-for-major-mode mode
-        "j" 'slack-channel-select
-        "g" 'slack-group-select
-        "r" 'slack-select-rooms
-        "d" 'slack-im-select
-        "p" 'slack-room-load-prev-messages
-        "e" 'slack-message-edit
-        "t" 'slack-thread-show-or-create
-        "q" 'slack-ws-close
-        "mm" 'slack-message-embed-mention
-        "mc" 'slack-message-embed-channel
-        "k" 'slack-select-rooms
-        "@" 'slack-message-embed-mention
         "#" 'slack-message-embed-channel
+        "(" 'slack-message-remove-reaction
         ")" 'slack-message-add-reaction
-        "(" 'slack-message-remove-reaction)
+        "@" 'slack-message-embed-mention
+        "T" 'slack-all-threads
+        "d" 'slack-im-select
+        "e" 'slack-message-edit
+        "g" 'slack-group-select
+        "j" 'slack-channel-select
+        "k" 'slack-select-rooms
+        "mc" 'slack-message-embed-channel
+        "mm" 'slack-message-embed-mention
+        "p" 'slack-room-load-prev-messages
+        "q" 'slack-ws-close
+        "r" 'slack-select-rooms
+        "t" 'slack-thread-show-or-create
+        "u" 'slack-all-unreads)
       (let ((keymap (symbol-value (intern (concat (symbol-name mode) "-map")))))
         (evil-define-key 'insert keymap
-          (kbd "@") 'slack-message-embed-mention
           (kbd "#") 'slack-message-embed-channel
-          (kbd ":") 'slack-insert-emoji)))))
+          (kbd ":") 'slack-insert-emoji
+          (kbd "@") 'slack-message-embed-mention)))))
 
 (defun slack/post-init-window-purpose ()
   (purpose-set-extension-configuration