Junk email not being deleted after 30 days on personal outlook.com

ANDREW RICHARDSON 0 Reputation points
2026-11-02T23:23:18.28+00:00

Hi,

I've got a personal outlook.com account. There's a banner at the top of the junk email folder that says "Items in Junk Email will be permanently deleted after 30 days". This doesn't happen, and I have emails in there that are older than 35 days. Does anyone know why, or how to fix it?

Cheers

Outlook | Web | Outlook.com | Email
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  1. Kai-H 30,315 Reputation points Microsoft External Staff Moderator
    2026-11-04T11:07:01.93+00:00

    Hi, ANDREW RICHARDSON

    The 30-day cleanup runs on Microsoft's side, and it can stall for some mailboxes. The 30 days may also count from when an email landed in Junk, not from the date shown on it.

    Here are some suggestions you can try:

    Send the Junk emails to Deleted Items instead of wiping them for good. Open Junk Email, tick the checkbox at the top to select everything, then click Delete (not Shift+Delete). For people with this same problem, it is suggested to let the Deleted Items cleanup handle it, since that one seems to keep working when the Junk cleanup doesn't.

    Turn on automatic emptying when you sign out. Go to Settings > Mail > Message handling, check Empty my Deleted Items folder under "When signing out", and click Save.

    Sign out of Outlook.com completely, then sign back in. If you always stay signed in, it is recommended to do this once. After signing out and back in, the old Junk emails got cleared on the next run.

    If you also use Outlook on your PC or phone, check that it isn't moving old emails back into Junk. Synced apps or rules can keep resetting the 30-day clock.

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  2. AI answer

    2026-11-02T23:24:06.06+00:00

    Items remaining in an Outlook.com Junk Email folder beyond 30 days are not expected; manually empty the folder, then report the retention failure through Outlook.com’s in-app support because there is no user-configurable retention setting to repair it.

    Clear the existing messages

    In Outlook.com:

    1. Open Junk Email.
    2. Review the folder for any legitimate messages.
    3. Right-click Junk Email in the folder list and select Empty folder.

    Alternatively, select individual messages and press Shift+Delete to permanently delete them. Microsoft states that items in Junk are automatically deleted after 30 days and documents Empty Folder as the immediate manual cleanup option.^1^

    Caution: Emptying the folder or using Shift+Delete permanently removes the selected mail.

    Report the automatic-deletion failure

    The current Outlook.com known-issues page does not list Junk Email retention as an active known issue.^2^ Treat continued recurrence as an account-specific service problem:

    1. Sign in to Outlook.com in a desktop browser.
    2. Select Help on the top menu.
    3. Search for a phrase such as Junk email not automatically deleted after 30 days.
    4. Scroll to Still need help? and select Yes.
    5. Include:
      • The oldest message date visible in Junk.
      • When the behavior was first noticed.
      • A screenshot of the folder banner and old messages, with personal information obscured.
      • Whether messages older than 30 days reappear after manually emptying the folder.

    That is Microsoft’s supported contact route for Outlook.com account problems.^3^

    There is no documented Outlook.com setting that lets a personal-account user change or re-enable the Junk retention period. Rules that move mail elsewhere would change where messages accumulate, but they would not repair the Junk folder’s server-side cleanup.

    References

    1. What is Microsoft cloud storage?
    2. Fixes or workarounds for recent issues on Outlook.com
    3. How to get support for Outlook.com | Microsoft Support
    AI-generated content may be incorrect. Read our transparency notes for more information.

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