mailbox full

Shirley Rosiak 0 Reputation points
2026-11-12T00:20:19.46+00:00

i am getting a message the my mail box is full. What shuld I do?

Outlook | Web | Outlook on the web for business | Email
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  1. Alina Le 5,820 Reputation points Independent Advisor
    2026-11-12T00:59:06.1333333+00:00

    Hello Shirley Rosiak

    If this mailbox belongs to a business account managed by an organization, the issue usually indicates that the mailbox storage quota has been reached.

    1/ Reduce mailbox size

    As a first step, try checking and cleaning up the mailbox storage through "Outlook on the web" (OWA):

    • Sign in to Outlook on the web: https://outlook.cloud.microsoft/
    • Go to "File" -> "Settings" -> "Account" -> "Storage".
    • Review which folders are consuming the most space and permanently delete any "unnecessary emails", especially those with large attachments (for example: Deleted items/Message in teams/ Draft)

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    User's image

    2/ Enable an Online Archive mailbox (IT administrator support)

    • If mailbox cleanup does not free enough space, contact your IT administrator to determine whether an Online Archive mailbox can be enabled for your account.
    • The administrator can check this in "Exchange Admin Center" > "Recipient" > "Mailboxes" > "Affected user mailbox" and enable it if supported by the current subscription.

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    For your reference:

    Manage user mailboxes in Exchange Online | Microsoft Learn

    • If an archive mailbox already exists, the administrator can help move older email data into the archive or review existing archiving policies.
    • If an archive mailbox is not enabled, the administrator can enable it by following the steps in the article above.

    After the archive mailbox is enabled, older messages can be moved from the primary mailbox to the archive mailbox to help free up space in the primary mailbox.

    3/ Check whether the current license supports Online Archiving

    If Online Archive is unavailable, the IT administrator should review the user's assigned license in Microsoft 365 Admin Center > Users > Active users > Licenses and apps and compare it with the "Feature availability across Exchange Online plans" section of the article below to determine whether Online Archiving is included or whether an upgrade (for example, to Exchange Online Plan 2) may be required.

    User's image

    Exchange Online Archiving service description - Service Descriptions | Microsoft Learn

    Please let me know if I can do anything more for you.

    Have a nice day!

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  2. AI answer

    2026-11-12T00:20:48.4466667+00:00

    Open Outlook on the web and go to Settings → Account → Storage, then permanently remove enough mail to bring the mailbox below its quota.^1^

    Free mailbox space

    1. Select Settings (gear icon) → Account → Storage.
    2. Review the folder-size breakdown and clean the largest folders first.
    3. To find large messages, return to the message list and select Filter → Sort by → Size. Select it again if the smallest messages appear first.
    4. For messages with attachments you need:
      • Select Save to OneDrive beneath the attachment.
      • After confirming the file was saved, delete the original message.
    5. Empty Deleted Items. Ordinary deletion only moves messages there, and that folder continues to count against your storage quota.
    6. To bypass Deleted Items, select unwanted messages and press Shift+Delete. This permanently deletes them, so verify the selection first.^1^
    7. Check Settings → Account → Storage again, then send yourself a new test message.

    You can also select a repetitive message in the Inbox and use Sweep to remove older or unwanted messages from that sender. Empty Deleted Items afterward, because Sweep alone does not reclaim the storage.^1^

    If there still is not enough space

    For a work or school mailbox, ask your Microsoft 365 administrator to:

    • Enable or provision an archive mailbox so older messages can be moved out of the primary mailbox.
    • Review your mailbox quota and license, and provision more space if the subscription permits it.^1^

    If Storage shows available capacity but the full-mailbox warning remains, report that discrepancy to the administrator rather than deleting more mail; hidden recoverable items or organizational retention settings may require administrator investigation.

    References

    1. [Web](https://support.microsoft.com/outlook/mailbox-storage-limits-in-outlook)
    AI-generated content may be incorrect. Read our transparency notes for more information.

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