> ## Documentation Index
> Fetch the complete documentation index at: https://learn.workflow.dog/llms.txt
> Use this file to discover all available pages before exploring further.

# Mark as Unread

> Mark one Gmail message as unread.

The **Mark as Unread** action adds Gmail's built-in `UNREAD` label to a message.
Use it to return processed mail to an inbox review queue or preserve a reminder
for a person.

## Inputs

| Input                   | Type           | Required | Description                           |
| ----------------------- | -------------- | -------- | ------------------------------------- |
| **Third-party account** | Google account | Yes      | Gmail account containing the message. |
| **Message ID**          | String         | Yes      | Gmail ID of the message to update.    |

<Note>This action changes the message and returns no output.</Note>