How to Fix Emails Missing in Apple Mail on a New Mac
Question details
Users are unable to see their emails in Apple Mail on a newly set-up Mac, despite the emails synchronizing correctly on other devices.

- Product
- Apple Mail
- Device & OS
- macOS
- Scenario
- Setting up a new Mac and attempting to sync existing email accounts via the native Apple Mail client.
- Observed behavior
- Emails are visible on previously connected devices (like an iPhone or an older laptop) but fail to appear or synchronize in the Apple Mail application on the new Mac.
Ensure your new Mac is connected to a stable internet connection and that you have your email account credentials (username, password, and server settings) readily available before troubleshooting.
Verify Account Protocol (IMAP vs. POP)
Ensure your email account is configured to use IMAP instead of POP, allowing your emails to sync seamlessly across multiple devices.
Email accounts can be set up using either POP or IMAP protocols. If your older devices are using POP, they might be downloading and removing emails from the server, leaving nothing for your new Mac to download. Switching to IMAP ensures emails remain on the server and synchronize across all devices.
Launch the Apple Mail application on your new Mac. From the top menu bar, click on 'Mail' and select 'Settings' (or 'Preferences' on older macOS versions).
Navigate to the 'Accounts' tab and select the problematic email account from the left sidebar.
Click on the 'Server Settings' tab to verify the incoming mail server type. Ensure it is configured as an IMAP account rather than POP.

Force Apple Mail to Resync by Rebuilding the Mailbox
Rebuild the local mailbox to force Apple Mail to download all messages again directly from the email server.
Check Email Provider Security Settings
Confirm there are no hidden provider-side security blocks preventing synchronization on a newly registered device.
Enhance Your Mac Productivity with WPS Office
While resolving email synchronization issues on your new Mac, ensure your document workflow remains completely uninterrupted. WPS Office is a free, lightweight, and highly compatible alternative to Microsoft Office, offering Word, Excel, and PowerPoint alternatives in one seamless application for your Mac.
- 1. Download for Mac: Visit the official WPS Office website and download the macOS version designed specifically for your system.
- 2. Install and Sign In: Complete the quick installation process, open the suite, and sign in to unlock free cloud storage.
- 3. Open Your Documents: Drag and drop your existing Microsoft Office files directly into WPS Office to start editing without any formatting loss.

Frequently Asked Questions
Why are my emails showing on my iPhone but not my Mac?
This typically occurs if the Mac is using different server settings (such as POP instead of IMAP), if the mailbox data needs rebuilding, or if your email provider requires additional authentication for the newly connected Mac.
How do I know if I am using IMAP or POP in Apple Mail?
To check your protocol, go to Mail > Settings > Accounts, select your email account, and look under the Server Settings tab. The incoming mail server field will explicitly state whether it is an IMAP or POP server.
Will rebuilding my mailbox in Apple Mail delete my emails?
No, rebuilding a mailbox simply clears the local cache on your Mac and forces Apple Mail to re-download all existing messages and attachments directly from the email server.
What should I do if my emails are still missing after rebuilding?
If emails are still missing, you should verify your account credentials, log into your webmail to ensure the emails exist on the server, check for any provider-side security blocks, or contact Apple Support for further diagnostics.




