> ## Documentation Index > Fetch the complete documentation index at: https://docs.cassidyai.com/llms.txt > Use this file to discover all available pages before exploring further. # Add label to Outlook message > Add an Outlook category label to a message from a Workflow. Use the **Add Label to Microsoft Outlook Message** action to apply a category label to an Outlook message from within a [Workflow](/workflows/overview). This helps you automatically organize and categorize incoming emails. ## Set up the action While editing a Workflow, click the **+** button between existing blocks. Select **Add Label to Microsoft Outlook Message** from the action list. Selecting the Add Label to Microsoft Outlook Message action Click the action name to give it a more descriptive label for easier reference. Renaming the Add Label to Microsoft Outlook Message action If you haven't already, connect your Microsoft Outlook account to Cassidy. Adding a Microsoft Outlook connection for the action If you're using this action with the **New Email Received in Microsoft Outlook** trigger, enable **Add Label to Trigger Email** to automatically apply labels to the email that started the Workflow. Add Label to Trigger Email toggle Enter an email ID manually, use a variable from previous steps (such as the message ID from a trigger), or click the list icon to search and select an email from the trigger. If **Add Label to Trigger Email** is enabled, this field can be left empty. Email field with variable reference Searching for an email to label Search for and select existing Microsoft Outlook labels, or click the pencil icon to manually enter label names. You can add multiple labels to organize your emails effectively. Searching for Outlook labels to add ## Related Trigger a Workflow when a new email is received. Send an email from a Workflow. Reply to an existing email thread from a Workflow. See all Outlook Workflow triggers and actions.