{"id":6629,"date":"2026-09-09T06:50:08","date_gmt":"2026-09-09T06:50:08","guid":{"rendered":"https:\/\/www.macsonik.com\/blog\/?p=6629"},"modified":"2026-09-09T06:50:08","modified_gmt":"2026-09-09T06:50:08","slug":"outlook-archive-not-reducing-mailbox-size","status":"publish","type":"post","link":"https:\/\/www.macsonik.com\/blog\/outlook-archive-not-reducing-mailbox-size\/","title":{"rendered":"Resolve Error Outlook Archive not Reducing Mailbox Size? Fix It"},"content":{"rendered":"\n\n
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user Query: <\/strong>I use the Archive folder in Outlook to keep important old emails for future reference, but my mailbox is still showing as almost full or overloaded. Shouldn’t archiving reduce my mailbox size? I’m worried about losing data or breaking something if I try to fix this myself – is there a safe way to resolve this without risk? <\/span><\/p>\n

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Quick Solution: <\/strong><\/p>\n

Yes, this issue has a solution. If your mailbox size is not compact after archiving, it’s usually because of these:<\/p>\n

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  1. OST cache hasn’t refreshed – restart Outlook, or run Compact Now (File -> Account Settings -> Data Files -> Settings).<\/li>\n
  2. Deleted Items folder is full – clear it, as it still counts against your quota.<\/li>\n
  3. Online Archive sync delay – can take a little time to reflect on the server.<\/li>\n<\/ol>\n<\/div>\n

    Introduction <\/strong>
    \nFirstly, learn about the reasons why the Outlook mailbox size is not reduced, even after archiving it. Further, you will be introduced to the advanced PST Splitter Tool<\/strong><\/a> and various manual approaches. To pick the best method to resolve this issue, you have to go through this blog thoroughly.<\/span><\/p>\n

    <\/i> Download Now<\/a><\/i> Purchase Now<\/a><\/div>\n

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    Table of Contents<\/p>\nToggle<\/span><\/path><\/svg><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n