How to Fix an Email Account That is “Over Quota”
An over quota message means that there is not enough space left in your mailbox to accept the new messages. Your mailbox encompasses everything from your Inbox, to your Sent Items, to your Deleted Items, to your Drafts and Junk folders, and all of the individual server folders that you may create to keep your emails organized.
Another important note to understand is that it isn’t necessarily the number of emails that you have in your mailbox but rather the size of the emails, including the attachments.
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