How to set IMAP Prefix in Apple Mail

Summary

When syncing your email account using IMAP and Apple Mail on macOS and your folders do not display properly, you may have problems saving emails to your drafts, deleted items and sent folders.

Cause

Apple Mail has an incorrect IMAP Path Prefix

Resolution

Configure Apple Mail to use the correct IMAP Path Prefix for your IMAP server.

How to set IMAP Path Prefix in Apple Mail

  1. Select the Mail menu and click Preferences.
  2. Click the Accounts tab.
  3. Select your Ecenica email account on the left.
  4. Click the Server Settings tab.
  5. Click the Advanced IMAP Settings button.
  6. Enter INBOX for IMAP Path Prefix.
    macos apple mail imap path prefix inbox
  7. Click OK and close the Accounts window.