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Hello Oscar Le
Good day and thanks for reaching out.
Based on the information, it appears some emails are deleting or moved to other folders without inbox rules or human interaction. There are several potential reasons why emails might be deleted or moved to other folders in Outlook. To better assist you, we need more information on the following.
- Which version of Outlook are using?
- Has this issue been occurring consistently, or was it a one-time event?
- Which folders have the emails been moved to? Is it a folder you recognize or one that was recently created?
- Have you tried resetting all rules, you can use the command outlook.exe /cleanrules in the Run dialog box and have you checked if the issue
persists in outlook.exe /safe.
- Have you tried repairing the current Outlook OST file Repair Outlook Data Files (.pst and .ost)?
- Have you used MFCMAPI tool to check and remove corrupted inbox rules? Download and install the MFCMAPI tool microsoft/mfcmapi.
- Open MFCMAPI and select Session > Logon.
- Choose your Outlook profile.
- Navigate to Root Container > Top of Information Store > Inbox.
- Right-click Inbox and select Open associated contents table.
- Look for any entries with the message class IPM.ExtendedRule.Message and delete them. This can help remove any hidden or corrupted rules
Note: Due to forum policies and confidential information protection, please share the requested information with me in the "View Direct Messages" section above.
Here are the steps to open View Private Messages:
To view your direct message options> log in to Microsoft Community and use the email account that you provided in the email account that post this subject information in the Microsoft Info created in the Community > click on your profile Picture > select the MineProfile option.
I'll wait for your next update in a private message. I will provide you with further guidance accordingly.
Sincerely,
Bertrand