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RCD Mattermost Sign In

The URL for Mattermost is You will be prompted to sign in with GitLab. See our GitLab documentation for information on signing into GitLab.

  1. Go to in your web browser.

  2. If prompted to go to the app, you can choose to View in Browser to continue following these instructions.

    app selection prompt

  3. When you see the prompt to sign in with GitLab, press the GitLab button.

    Mattermost login page

  4. On the GitLab login page, enter your Clemson University account credentials.

    GitLab login page

  5. If this is your first time accessing Mattermost, you will need to authorize Mattermost to read some information from GitLab. Press the Authorize button.


    You will only have to do this the first time.

    Mattermost authorization screen

  6. Finally you will need to select a team to join. Everyone should join the Research Computing Team.

    join the research computing team