Here are a few common shortcuts in Mattermost: Ctrl + K (or Cmd + K on macOS): Open the channel switcher to quickly switch between channels. Ctrl + / (or Cmd + / on macOS): Open the command palette to execute various commands. Ctrl + Shift + L (or Cmd + Shift + L on macOS): Open the direct message switcher to quickly switch between direct message conversations. Ctrl + Shift + M (or Cmd + Shift + M on macOS): Toggle the focus on the last direct message.