📧 Outlook Mailbox Auto Archive (In-Place Archive)

Overview 
 When your Outlook mailbox reaches 96% of its storage capacity , the system will automatically move older emails to your Online Archive (also known as In-Place Archive) . This helps prevent mailbox overflow and reduces the need for manual cleanup. 
 
 How It Works 
 
 Once your mailbox hits 96% capacity , Outlook triggers an automatic archiving process . 
 Older emails are moved from your primary mailbox to your Online Archive . 
 This process runs in the background and requires no user action . 
 
 
 Where Do Archived Emails Go? 
 
 Emails are moved to your Online Archive mailbox , which appears in Outlook as a separate folder tree. 
 You can access it in:
 
 Outlook Desktop App (left-hand folder pane under “Online Archive”) 
 Outlook Web (OWA) 
 
 
 
 
 Important Notes 
 
 ✅ The Online Archive is still part of your overall storage allocation (not external storage). 
 ✅ Archived emails are fully searchable and accessible anytime. 
 ✅ This process helps keep your primary mailbox performant and under quota . 
 ❗ Moving emails to the archive does not free unlimited space —it simply redistributes usage within your account. 
 
 
 Benefits 
 
 Reduces risk of mailbox full errors 
 Improves Outlook performance 
 Minimises need for manual cleanup or PST files 
 Keeps older emails accessible without cluttering your inbox 
 
 
 What You Should Do 
 
 No immediate action is required when this happens. 
 However, you may want to:
 
 Regularly review and delete unnecessary emails 
 Empty Deleted Items and Junk folders 
 Be mindful of large attachments