Mac Mail — How to synchronize the default IMAP folders


These instructions are accurate up to Mail version 16.0 (Sonoma).

A common issue with Apple's Mail app is that it sometimes does not sync folders from the mail server to the same folders in the Mail app on your computer. If you find folders such as Drafts, Sent, Junk, or Trash are not syncing email as it appears in webmail, then use the following steps to correct the issue.

Synchronizing a folder

  1. Log into the Mail app. View the following article for details:
  2. Navigate to Mail > Settings.
  3. Select the Accounts tab.
    Mac Mail accounts tab
  4. Select your email address in the left pane.
  5. Select the Mailbox Behaviors tab in the center section.
  6. Click the dropdowns next to Drafts, Sent, Junk, and Trash to select which folder you'd like to sync each to between devices.

    Do not select a folder under the section On My Mac since this is an offline folder and will not be synced.

Repeat the steps above for any other folder such as Drafts, Junk, or Trash.

Adding custom folder

Mac Mail does not currently allow you to add additional folders to configure. It's only possible to adjust the folders listed on the Mailbox Behaviors tab.

Set the INBOX prefix

Use the following steps to confirm that your path prefix is set to INBOX.

  1. Navigate to Mail > Settings.
  2. Click the Accounts tab.
  3. Click the Server Settings tab.
  4. Click the Advanced IMAP Settings button.
    Mac Mail accounts tab
  5. Make sure INBOX is typed into the IMAP Path Prefix field in the popup window.

See also

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Article last updated PST.

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