Recommended Free Tools
If emails are disappearing from your Inbox, check Settings > Mail > Rules for a rule that deletes messages or moves them to Deleted Items. Review the rule’s conditions and actions before changing it; if it is unintended, edit or delete it and save. Then check Deleted Items to restore messages already moved.
Find the rules in your Outlook version
Microsoft recommends checking rules when messages have moved out of the Inbox. In Outlook on the web, open Settings > Mail > Rules to view them. The available rule types differ across Outlook versions, so check the app where the messages are behaving unexpectedly.
As an Amazon Associate I earn from qualifying purchases.
| Outlook version | Rule types supported | What that means when troubleshooting |
|---|---|---|
| Outlook on the web | Server-side rules only | Review the rules at Settings > Mail > Rules. Microsoft’s instructions for this route are for Outlook on the web. Microsoft Support: Use inbox rules in Outlook |
| Outlook.com | Server-side rules only | Check rules associated with the Outlook.com mailbox and edit or remove one that incorrectly moves mail out of the Inbox. Microsoft Support: Fix Outlook.com email sync issues |
| New Outlook | Server-side rules only | Rules run on the mail server rather than depending on classic Outlook being open. Microsoft Support: Edit or fix a broken rule in Outlook |
| Classic Outlook for Windows | Server-side and client-side rules | Also inspect classic Outlook if the web or new Outlook rules do not explain the behavior. A client-side rule depends on features on that device and runs when classic Outlook is logged in. Microsoft Support: Edit or fix a broken rule in Outlook |
Inspect a rule without removing useful automation
- Open the rules list. In Outlook on the web, go to Settings > Mail > Rules.
- Check each rule’s conditions. Note which senders, recipients, words, or other criteria cause it to apply. A rule can affect only a subset of messages, so compare its conditions with an affected email.
- Check its actions. Look for an action that deletes a message or moves it to Deleted Items. Outlook rules automatically handle incoming messages according to their conditions and actions. Microsoft Support: Manage email messages by using rules in Outlook
- Review exceptions and rule order. An exception may spare some messages from an otherwise matching rule. Also check whether Stop processing more rules is enabled: when selected, later rules are ignored, even if they would otherwise apply. Microsoft Support: Manage email messages by using rules in Outlook
- Decide whether the rule is intentional. Do not remove a rule solely because it sends messages to Deleted Items. Microsoft’s Outlook best practices include an example that moves certain automatic meeting responses there. Microsoft Support: Best practices for Outlook
- Correct an unintended rule. Edit it to change its conditions or actions, or delete it if it is no longer needed, then save the change. For a work or school account, contact your administrator if Outlook displays a warning while you modify rules. Microsoft Support: Outlook.com missing mail guidance
Why the web and desktop may behave differently
Server-side rules are handled by the mail server and run whether or not you are logged in to Outlook on your computer. New Outlook, Outlook on the web, and Outlook.com support server-side rules only; classic Outlook supports both server-side and client-side rules. A client-side rule depends on Outlook features on the device and runs when classic Outlook is logged in. If a rule uses a local-only folder, it cannot move messages from the server to a folder that exists only on that device. Microsoft Support: Edit or fix a broken rule in Outlook
If mail keeps moving after you check web rules, inspect classic Outlook’s rules too when you use that version. Differences in rule support can explain why behavior appears tied to one desktop installation. Work or school account setup and organization policies can also affect rule changes; follow any warning and ask an administrator for help if needed.
#1 Best Overall
Restore messages that were moved
If the message is in Deleted Items
Open Deleted Items, find the message, and use Outlook’s restore or move option to return it to the Inbox or another folder. Microsoft’s missing-mail guidance recommends restoring a message found there. Microsoft Support: Outlook.com missing mail guidance
If it has been removed from Deleted Items
In Outlook.com or Outlook on the web, look for Recover items deleted from this folder in Deleted Items. Microsoft says items removed from Deleted Items can be recovered for 30 days in those services. Availability depends on account type, and the recoverable-items action is not available in Outlook mobile apps or mobile browsers. Microsoft Support: Recover deleted email messages in Outlook
If you cannot find the message
Check Junk Email and any filters that may have hidden or redirected the message. These are also among Microsoft’s recommended checks for missing mail. Microsoft Support: Outlook.com missing mail guidance
The Tool Desk
Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Quick Recap
Rank #3
- The Microsoft Office 365 Bible: The Most Updated and Complete Guide to Excel, Word, PowerPoint, Outlook, OneNote, OneDrive, Teams, Access, and Publisher from Beginners to Advanced
- ABIS BOOK
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
