> ## Documentation Index > Fetch the complete documentation index at: https://docs.twenty.com/llms.txt > Use this file to discover all available pages before exploring further. # Mailbox > 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 this 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 ## 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 within 5 minutes ### What Doesn't Get Synced * **Internal Emails**: Emails between colleagues (same domain) remain private * **Group Emails**: Distribution lists and group emails are excluded * **Excluded Folders**: Folders you've chosen not to sync (configured under Settings → Accounts → Email) ### 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 within 5 minutes, 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)