---
title: Mailbox
description: Understanding email integration features in Twenty.
---

**Note**: To connect your email accounts and configure sync settings, visit [Email & Calendar Setup](/user-guide/calendar-emails/overview).

## How Email Integration Works

Twenty automatically links emails from your connected mailboxes to the relevant CRM records, keeping all communication history in one place.

### Objects Where Emails Can Be Found

Email conversations appear in three main objects:

- **People**: View all emails exchanged with a specific contact
- **Companies**: See all emails related to a company and its employees
- **Opportunities**: Access email threads related to the company linked to the opportunity. Email threads from individual people on the opportunity are not shown yet.

### Viewing Email Threads

1. **Navigate to a Record**: Go to any Person, Company, or Opportunity record
2. **Select the Emails Tab**: Click on the `Emails` tab to view synced emails
3. **Open an Email Thread**: Click on any email to open and read the full conversation
4. **Browse History**: Scroll through the complete email history with that contact

<img src="/images/user-guide/emails/show-inbox.png" style={{width:'100%'}}/>

## What You'll See

### Email Thread View
When you open an email thread, you can:
- **Read Full Conversations**: See the complete email exchange
- **View Participants**: See all people involved in the email thread
- **Check Timestamps**: Know exactly when each email was sent
- **Access Context**: Understand the full communication history

### Email Visibility
Depending on your mailbox settings, you might see:
- **Full Content**: Complete email text and details
- **Subject + Metadata**: Subject line, sender, recipient, and timestamp
- **Metadata Only**: Basic information without email content

## Email Sync Behavior

### Sync Rate
Twenty imports emails at approximately **400 messages per minute**. This rate is currently limited by Gmail API rate limiting (and applies similarly to other providers).

For reference:
- 1,000 emails → ~2.5 minutes
- 10,000 emails → ~25 minutes
- 50,000 emails → ~2 hours

### What Gets Synced
- **External Emails**: All emails with contacts outside your organization
- **Automatic Linking**: Emails connect to existing People and Company records
- **Multiple Addresses**: Emails from any address link to the same contact record
- **Updates**: New emails appear immediately

### What Doesn't Get Synced
- **Internal Emails**: By default, emails between colleagues (same domain) remain private (configured in Settings → General → Security)
- **Group Emails**: Distribution lists and group emails are excluded
- **Excluded Folders**: Folders you've chosen not to sync (configured under Settings → Accounts → Email)

### Internal Emails
Choose if internal emails are synchronized in Twenty:
1. Go to **Settings → General → Security**
2. Toggle **Sync Internal Emails** on/off

### Selective Folder Sync
Control which email folders sync with Twenty:
1. Go to **Settings → Accounts** and select your connected email account
2. Configure folders under the Email section
3. Choose specific folders to include or exclude (Inbox, Sent, Archive, custom folders)

## Troubleshooting Email Sync

### Common Sync Issues
- **Sync Delays**: Emails appear immediately, but initial imports take longer
- **Missing Emails**: Check if:
  - Folders are excluded in Message Folder settings
  - Contact auto-creation is disabled (emails need existing Twenty records)
  - Email is from colleagues (same domain) or group lists
  - Mailbox is still completing initial sync

### Email Limitations
- **System Folders**: Some email folders may not be available for sync
- **Aliases**: Only true mailboxes can be connected (not email aliases)

