Inbox (Search Bar)
Use the search bar at the top of Outlook or Outlook Web to search for sender name, subject, or keywords.
Double-check sorting (e.g., newest to oldest) and filters (e.g., unread only).
Junk Email Folder
Messages flagged as spam are often routed here.
Quarantine
Microsoft Defender might hold it if flagged as phishing or malware.
Other or Focused Inbox
If Focused Inbox is enabled, check both the “Focused” and “Other” tabs in Outlook.
Rules (Inbox Management Rules)
Go to Settings > Mail > Rules (in Outlook Web) or File > Manage Rules & Alerts (desktop).
Check if an inbox rule moved or deleted the message.
Deleted Items
The email might have been accidentally deleted.
Clutter or Archive
Rarely used now, but if Clutter is still enabled, check that folder.
Also check the Archive folder.
Blocked Senders List
Go to Settings > Mail > Junk email (Outlook Web).
Make sure the sender isn’t accidentally blocked
Go to the Quarantine Page (see instructions below)
Filter Your Messages (Optional):
At the top, you can filter by:
Time range (last 7 days, 30 days, etc.)
Message type (spam, phishing, etc.)
Recipient (if you’re an admin)
View and Take Action:
Click on a message to:
Preview the email
Release it to your inbox
Report as false positive
Block sender or download message headers
Alternative Access (via Email):
Microsoft often sends “quarantine notifications” to users.
These emails include direct links to release or review quarantined emails.
Stay tuned for more helpful hints!