It sounds like you're experiencing issues with your Outlook email storage despite having a Microsoft 365 subscription that provides 1TB of storage. The warning you're receiving about your email storage being full likely refers to the mailbox quota, which is separate from your overall OneDrive storage.
In Microsoft 365, the default mailbox storage limit is often 5GB for standard mailboxes. If you're receiving messages about exceeding this limit, it means that your mailbox has reached its quota, not your overall OneDrive storage. Here are some steps you can take to resolve this issue:
- Check Mailbox Size: Use PowerShell to check the size of your mailbox and see if it indeed exceeds the quota. You can run the following command:
Get-MailboxStatistics -Identity <YourEmailAddress> | FL DisplayName, TotalItemSize - Clean Up Mailbox: If your mailbox is full, consider deleting unnecessary emails or archiving older messages. You can also check the Recoverable Items folder, which can contribute to the total size but isn't visible to users.
- Enable Archive: If you haven't already, consider enabling an archive for your mailbox. This can help manage your mailbox size by moving older emails to the archive automatically.
- Retention Policies: Check if any retention policies are applied to your mailbox that might be affecting your email storage. You can verify this by running:
Get-Mailbox <YourEmailAddress> | fl RetentionPolicy - Contact Support: If these steps do not resolve your issue, it may be beneficial to contact Microsoft Support for further assistance.
By following these steps, you should be able to address the storage warning and manage your mailbox more effectively.