diff --git a/red-teaming/C3-Client/README.md b/red-teaming/C3-Client/README.md
index 3026e0f..13bcbdc 100644
--- a/red-teaming/C3-Client/README.md
+++ b/red-teaming/C3-Client/README.md
@@ -14,7 +14,7 @@ The script offers subcommands-kind of CLI interface, so after every command one
 ```
 PS D:\> py c3-client.py --help
 
-    :: C3 Client - a lightweight automated companion with C3 voyages
+    :: F-Secure's C3 Client - a lightweight automated companion with C3 voyages
     Mariusz B. / mgeeky, <mb@binary-offensive.com>
 
 usage:
@@ -45,7 +45,7 @@ optional arguments:
 ```
 PS D:\> py c3-client.py -f text http://192.168.0.200:52935 alarm relay --help
 
-    :: C3 Client - a lightweight automated companion with C3 voyages
+    :: F-Secure's C3 Client - a lightweight automated companion with C3 voyages
     Mariusz B. / mgeeky, <mb@binary-offensive.com>
 
 usage: Usage: ./c3-client.py [options] <host> <command> [...] alarm relay [-h] [-e EXECUTE] [-x WEBHOOK] [-g gateway_id]
@@ -81,6 +81,8 @@ Currently, following commands are supported:
 - `ping` - ping selected Relays
 
 - `channel` - channel-specific commands
+    - `all`
+        - `clear` - Clear message queue of every supported channel at once
     - `mattermost`
         - `clear` - Clear Mattermost's channel messages to improve bandwidth
     - `ldap`
@@ -105,7 +107,7 @@ This example shows how to keep all of your Relays pinged every 45 seconds:
 ```
 PS D:\> py c3-client.py http://192.168.0.200:52935 ping -k 45
 
-    :: C3 Client - a lightweight automated companion with C3 voyages
+    :: F-Secure's C3 Client - a lightweight automated companion with C3 voyages
     Mariusz B. / mgeeky, <mb@binary-offensive.com>
 
 [.] Sending a ping every 45 seconds.
@@ -131,7 +133,7 @@ In this example setup an alarm that triggers upon new Relay checking-in. Wheneve
 ```
 PS D:\> py c3-client.py http://192.168.0.200:52935 alarm relay -g gate4 --execute "powershell -file speak.ps1 -message \`"New C3 Relay Inbound: <domain>/<userName>, computer: <computerName>\`""
 
-    :: C3 Client - a lightweight automated companion with C3 voyages
+    :: F-Secure's C3 Client - a lightweight automated companion with C3 voyages
     Mariusz B. / mgeeky, <mb@binary-offensive.com>
 
 [.] Entering infinite-loop awaiting for new Relays...
diff --git a/red-teaming/C3-Client/c3-client.py b/red-teaming/C3-Client/c3-client.py
index 89a27ce..41255a0 100644
--- a/red-teaming/C3-Client/c3-client.py
+++ b/red-teaming/C3-Client/c3-client.py
@@ -521,6 +521,21 @@ def getLastGatewayCommandID(gateway, secondOrder = True):
 
     return lastId
 
+def onAllChannelsClear(args):
+    channels = {
+        'LDAP' : onLDAPClear,
+        'MSSQL' : onMSSQLClearTable,
+        'Mattermost' : onMattermostPurge,
+        'GoogleDrive' : onGoogleDriveClear,
+        'Github' : onGithubClear,
+        'Dropbox' : onDropboxClear,
+        'UncShareFile' : onUncShareFileClear,
+    }
+
+    for k, v in channels.items():
+        print(f'\n[.] {k}: Clearing messages queue...')
+        v(args)
+
 def onMattermostPurge(args):
     data = {
         'data' : {
@@ -1091,6 +1106,14 @@ def parseArgs(argv):
     parser_channel.add_argument('-g', '--gateway-id', metavar='gateway_id', help = 'ID (or Name) of the Gateway which Relays should be pinged. If not given, will ping all relays in all gateways.')
     
     parser_channel_sub = parser_channel.add_subparsers(help = 'Specify channel', required = True)
+
+    ## All channels
+    all_channels = parser_channel_sub.add_parser('all', help = 'Commands that are common for all channels.')
+    all_channels_parser = all_channels.add_subparsers(help = 'Command to send', required = True)
+
+    ### clear
+    all_channels_clear = all_channels_parser.add_parser('clear', help = 'Clear every channel\'s message queue.')
+    all_channels_clear.set_defaults(func = onAllChannelsClear)
     
     ## Mattermost
     mattermost = parser_channel_sub.add_parser('mattermost', help = 'Mattermost channel specific commands.')
@@ -1171,7 +1194,7 @@ def parseArgs(argv):
 
 def main(argv):
     print('''
-    :: C3 Client - a lightweight automated companion with C3 voyages
+    :: F-Secure's C3 Client - a lightweight automated companion with C3 voyages
     Mariusz B. / mgeeky, <mb@binary-offensive.com>
 ''')
     parseArgs(argv)