Your mailbox is getting loaded, and apparently, youre on the edge of meeting an unexpected guest.

It becomes annoying when you discover that you cant send or receive any emails.

Well, Ive also faced the same problem once.

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This error appears when your mailbox occupies all the default allocated space and reaches the maximum limit.

This article will explain everything you gotta know to fix the size limit issue.

Why is My Outlook Mailbox Over Its Size Limit?

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Additionally, Microsoft quota program issues can affect the size limit and show error messages.

You will find an extensive explanation of the reasons in the following passage.

Read them to know about the cause correctly.

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If the mailbox size exceeds, you will receive an warning pop-up in Outlook.

When the synchronization process fails, you may face the mailbox size limit exceeding the issue notification.

Every Outlook version has a default size for the mailbox.

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Youre receiving a size limit error alert because the mailbox has already filled the allocated space.

The quota program may face issues; thus, you receive a size limit error alert.

Mailbox usually contains emails and items of your personal and organization.

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Weve seen users face problems with the mailbox size.

But, they dont want to delete or have doubts about deleting them.

They have legitimate reasons behind the issues.

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However, you could effortlessly make space in your mailbox without deleting important emails or items.

The following article will help you resolve your Outlook mailboxs size limit issue.

Read our new guide post on how toView Message Headers in Outlook.

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How to Fix Outlook/Office 365 error alert Your Mailbox is Over Its Size Limit?

it’s possible for you to archive or create a personal folder to move your items from the mailbox.

Also, you might increase the mailbox size by modifying the registry editor.

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Here are the ways to fix your mailbox is over its size limit error alert:

1.

Mailbox Cleanup

Mailbox cleanup is a built-in Outlook cleanup utility that allows you to reduce your mailbox space.

you might sort your mailbox by date and size and delete them to free up your mailbox.

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The procedure is very effortless and helpful.

To clean up your mailbox, follow the procedure below.

Deleting an item permanently will reduce your mailbox space.

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Also, read how toFix Outlook Not Connecting to Server Error.

Delete the Duplicate Items

Sometimes you create duplicate items for various purposes or receive the same items multiple times.

Duplicate items are unnecessary and occupy your valuable space in the mailbox.

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Finding the duplicate items manually would be a hassle.

But, you’re free to see and delete all the alternate versions from theMailbox Cleanupsection.

Well, you might increase the mailbox size of your Outlook apps by tweaking theregistry editor.

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But, be careful when you are modifying the registry.

Read the steps cautiously to increase the mailbox size.

double-check your available space is in the hard drive before putting the value.

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WarnLargeFileSizevalues are generally 95% ofMaxLargeFileSize.

But, you’ve got the option to put any number less than the value of MaxLargeFileSize.

Also, check our new guide postOutlook: The Home Menu is Missing.

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To compact your Outlook OST or PST data file, follow the steps below.

Check out our separate post onOutlook: Enable or Disable Macros.

Archive Data File

Your emails and items in the mailbox can be crucial.

Thats where thearchivefeature comes in.

you’re able to archive and reduce the mailbox space without deleting the mailbox items.

If you want to get into the archived data, youll find them in theArchivesfolder from the left pane.

Create a Personal Folder

Personal folders are similar to archives.

But, you have more control and can manually move items to your personal folders.

Check out the easiest way how toEnable Read Receipts In Outlook.

Frequently Asked Questions

What does it mean when Outlook says mailbox is full?

Outlook shows the mailbox is full when your mailbox has reached the maximum storage limit.

How do I free up space in Outlook without deleting emails?

you might archive data files or create a personal folder to free up space in Outlook without deleting emails.

Do archived emails stay forever?

Archived emails only get removed from the inbox and transferred to your local computer.

They will remain there indefinitely if you dont delete them manually.

Final Thoughts

The newer Outlook version offers more space in the mailbox than previous versions.

Our demand is increasing, and no provided space is enough.

At some point, youll need to free up the mailbox to keep the email flow active.