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Now, if it is displaying that your Outlook mailbox is almost full or full (red bar) then, you need to proceed to step two to fix Microsoft Outlook mailbox full error and free up storage space. Select Info option from the opened menu list and check Mailbox Cleanup section.
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Launch Microsoft Outlook email client and click on the File tab.Hence, below is how to verify the mailbox size limit: This is because sometimes we get messages that claim Outlook mailbox size increase might be phishing messages who attempts to get your login credentials or other sensitive data. Verify ‘Mailbox Full Outlook 2016’ WarningĪfter receiving Outlook mailbox almost full error, the first and foremost thing to do is verification of the error. Reduce Offline Folder Table (OST) File Size Verify ‘Mailbox Full Outlook 2016’ Warning
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