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

# Email Threads

> How emails link to submissions

# Email Threads

Kantilever automatically links related emails to submissions, keeping all correspondence in one place.

## How Threading Works

When a new email arrives, Kantilever determines whether it belongs to an existing submission or should create a new one.

### AI Classification

The system uses AI to classify each email into one of four categories:

| Label                   | Action                                          |
| ----------------------- | ----------------------------------------------- |
| **New Submission**      | Creates a new submission                        |
| **Existing Submission** | Links to an existing submission                 |
| **Irrelevant**          | Marked as spam/marketing, no submission created |
| **Ambiguous**           | Queued for manual review                        |

### Thread Matching

For emails classified as replies, Kantilever identifies the correct submission using:

1. **Conversation ID** - Email clients track conversation threads
2. **Subject Line** - Normalized subject matching (ignoring Re:, Fwd:, etc.)
3. **Sender/Recipient** - Matching email participants
4. **Attachment Fingerprints** - Similar attachment patterns

## Viewing Linked Emails

Open a submission and navigate to the **Emails** tab to see all linked messages:

* Original submission email
* Follow-up replies
* Additional documents received

Each email shows sender, date, subject, and a preview.

## Manual Triage

When the AI can't confidently classify an email, it creates a triage review action item.

### Reviewing Ambiguous Emails

1. Go to your **Action Items**
2. Find the triage review task
3. View the email content and AI's suggested classification
4. Choose the correct action:
   * Link to an existing submission
   * Create a new submission
   * Mark as irrelevant

### Correcting Mistakes

If an email was incorrectly linked:

1. Open the submission
2. Go to the **Emails** tab
3. Find the incorrectly linked email
4. Click to unlink or move to the correct submission

Corrections train the system to improve future classifications.

## Email Sources

New emails on a submission trigger additional processing:

* Documents are extracted from attachments
* Data fields may be updated with new information
* Activity timeline records the email receipt