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Written By Rohit Singh
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Updated on April 7th, 2026
A “storage deadlock” occurs when Apple Mail reaches its allocated byte limit. Users will receive a push notification “1 Unread Message,” but nothing is there when they open the inbox. An error gets generated that says, “Apple Mail not showing all emails”. Now, the question is how to fix this error to continue the operations. Read this blog to know every detail about why this error might have occurred and how one can fix it securely.
The Apple Mail not showing emails issue can be due to synchronization problems or incorrect account configuration. One can try updating the macOS and Apple Mail versions, ensuring correct server and account settings, etc.
There are several reasons that have caused the emails not to appear. A few of them are listed below:
Now that we know the causes that led Apple Mail emails not to appear in the mailbox, let’s move ahead. Now, we will implement various solutions to solve this problem.
If the mailbox filter is enabled, the Apple emails will not appear. Try disabling these filters to display the stored emails.
Follow these steps to start the process:
The Apple Mail inbox not showing all messages will occur if the synchronization settings are incorrect. With the correct sync settings will ensure the connection and retrieve every message.
The following are the steps to begin the process:
Sometimes, the mailbox database gets corrupted, which leads to Apple Mail not showing emails. Try to rebuild the mailbox and download the mail data again.
Use the following instructions to rebuild the mailbox:
The Mac Mail not showing all emails error occurs if the user is working on an outdated version of macOS and the Apple Mail application. Apple Mail regularly releases updates that fix various issues. By updating macOS, Apple Mail gets updated automatically.
Follow these steps to start updating:
It is always recommended and safe to take a backup of your emails before any such error, like Apple Mail not showing all emails, occurs. For backing up a large amount of Apple Mail email data, a professional tool, Cigati MBOX Converter, is used. With this tool, the user can safely back up complete email data into various file formats. Besides this, it allows direct migration to multiple email clients as well while maintaining the folder structure.
Simple steps to backup the Mac Mail email data:
It is important to find out the root cause of why Apple Mail not showing all emails in the mailbox. In today’s technical blog, we have mentioned various manual solutions that fix this error. In addition to this, it is recommended that users take a safe backup of their Apple Mail emails before executing them. To take a backup, an expert tool, the Cigati MBOX Converter, is recommended. This tool securely backs up all the email data without compromising data integrity.
You May Also Read: Mac Mail Search Not Working
Ans: Reasons for not seeing all your email messages in Mail could be several. These may include having the wrong filter settings chosen, slow or interrupted synchronization with the email server. Also, using an out-of-date version of the app, or having incorrectly set up your account (IMAP/POP3) can also cause this issue.
Ans: It can be because you have configured your Apple account to download only the recent emails. You can check the settings, Mail > Preferences > Accounts > Account Settings, and check those for both attachments and syncing. If you’re using Gmail, you also need to ensure that you have “All Mail” selected for your Gmail IMAP settings.
About The Author:
Rohit Singh is a technology professional with 7+ years of experience specializing in email systems, Exchange Server, Office 365, MS Outlook, and data migration solutions. He creates clear, practical, and solution-oriented content to help users and IT professionals resolve complex technical challenges efficiently.
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