# When Comment Changes

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URL: https://nocodb.com/docs/workflows/nodes/trigger-nodes/comment
Last updated: 2026-10-03

Trigger workflows when comments change on records in NocoDB.

The When Comment Changes trigger in NocoDB starts a workflow when a comment on a record in a selected table is added, edited, deleted, resolved, or reopened. The workflow context gets the comment data, its author, and the mentioned people. You can limit the trigger to specific comment events. You can also limit it to comments that mention specific people.

<AskNocoAI>
  <Prompt>
    When someone comments on a record in [Tickets], email [its Owner]
  </Prompt>

  <Prompt>
    When a comment is added to [Tasks], set [Last Activity] to today
  </Prompt>

  <Prompt>
    When someone comments on a record in [table], email [the record's creator]
  </Prompt>
</AskNocoAI>

### Configuration

* **Table**: Select the table to monitor for comment activity.

* **Comment events**: Optional. Select the comment events that start the workflow: **Comment added**, **Comment edited**, **Comment deleted**, **Comment resolved**, or **Comment reopened**. If you select none, all comment events start the workflow.

* **Mention filter**: Select how mentions control the trigger:

  | Option                                 | The workflow starts                                        |
  | -------------------------------------- | ---------------------------------------------------------- |
  | **Any comment** (default)              | For all comments, with or without mentions                 |
  | **When anyone is mentioned**           | Only when the comment @mentions someone                    |
  | **When specific people are mentioned** | Only when the comment @mentions one of the selected people |

* **People**: Select the people who must be mentioned for the workflow to run. This setting shows only when the mention filter is **When specific people are mentioned**, and it is then required.

<img alt="When Comment Changes trigger configuration" src={__img0} placeholder="blur" />

<img alt="Mention filter options" src={__img1} placeholder="blur" />

### How it works

* The trigger fires after one of the selected comment events occurs.
* Mention filters limit runs to comments that mention the relevant people.
* The workflow context gets the comment body, the author, and the mentions.

### Use cases

* Notify a teammate when a comment mentions them
* Send feedback to a channel when a comment is added
* Follow up automatically when a comment thread is resolved or reopened

## Availability

* Available on NocoDB Cloud (all plans) and licensed on-premise deployments.

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## Related pages

- [Manual](https://nocodb.com/docs/workflows/nodes/trigger-nodes/manual.md): The Manual Trigger node starts a NocoDB workflow only when a user runs it.
- [Button clicked](https://nocodb.com/docs/workflows/nodes/trigger-nodes/button-clicked.md): Start a workflow when a user clicks a Run automation button on an interface page or record.
- [Scheduled](https://nocodb.com/docs/workflows/nodes/trigger-nodes/scheduled.md): The Scheduled Trigger runs a NocoDB workflow on a fixed schedule.
- [Record Created](https://nocodb.com/docs/workflows/nodes/trigger-nodes/record-created.md): Trigger workflows when new records are created in NocoDB.
- [Record Updated](https://nocodb.com/docs/workflows/nodes/trigger-nodes/record-updated.md): Trigger workflows when records are updated in NocoDB.
- [Record Deleted](https://nocodb.com/docs/workflows/nodes/trigger-nodes/record-deleted.md): Trigger workflows when records are deleted in NocoDB.
- [Record Matches Condition](https://nocodb.com/docs/workflows/nodes/trigger-nodes/record-matches-condition.md): Trigger workflows when records meet specific conditions in NocoDB.
- [Record Created via Specific Form](https://nocodb.com/docs/workflows/nodes/trigger-nodes/record-created-form.md): Trigger workflows when new records are created via a specific form in NocoDB.