How to Fix Your mailbox is almost full Outlook 365 message

Get ready to learn How to Fix Your mailbox is almost full Outlook 365 message, as everything will be here. 

Is it happening again that the Is Outlook team bombarding you with emails? As it was reported about Outlook users, they are repeatedly getting emails regarding the following subject: 

The mailbox is nearly full.

Limit the size of your mailbox, for instance. Clear the Deleted Items folder and delete redundant messages from your inbox.

How to Release Space in Outlook 365 Mailbox

You are reaching very close to the limit of your Outlook storage, warns this message.

How do I free up mailbox space in Outlook 365?

Cleaning up some space in your Outlook mailbox can be done in several ways. You might clear off some outdated emails, large-size emails, duplicate emails, attachments, and deleted items for good. In this post, you will learn how to minimize the size of your Outlook mailbox by cleaning it up and compressing it.

These messages can also be forwarded by spammers and hackers. In that respect, you need to make sure the sender is the actual Office/Outlook team. Be careful also when clicking on the links attached to an email; this can lead to your account being compromised. 

Your mailbox is almost full Outlook 365 message

If you keep on receiving a notification from the Outlook team which says, 'Your mailbox is almost full', then here are the steps you will have to follow in order to get rid of this storage problem: 

Use Outlook's Mailbox Cleanup feature to clean up your inbox. 

Delete all those emails that are not relevant for you. 

Set the 'Deleted Items' folder to be automatically emptied every time when you close Outlook. 

Move all your older emails into a folder.

Upload all files to OneDrive here. 

Enable the Offset Database Mode. 

Shrink the Outlook PST file. 

Increase the Outlook data file limit. 

Upgrade Outlook.com 

1-Run the Mailbox Cleanup tool to remove items from your Outlook mailbox. 

The Mailbox Cleanup feature is designed to free up space in your Outlook mailbox, and you can follow these steps to get it running:

Launch Outlook. On the Info tab, click on the Tools menu option. Click on the Mailbox Cleanup utility now. Now, clean up Outlook's storage space and clear everything that is not needed or which you do not want with the help of the Mailbox Cleanup utility; after that do the following action: Option A) Empty the Deleted Items folder.

Further, delete the Outlook's Deleted Items folder, if you want to release some more space. All those items that you have ever deleted, whether it is emails or conversations, will fall into this folder. To delete items permanently from the deleted items folder, click the Empty button present next to that option. You can simply click the "View Deleted Items Size" option to check how much space your deleted things took in reality.

b) Auto Archive your e-mail automatically 

If you have little or no free space in your main Outlook inbox, you can Auto-archive automatically deletes older emails. To do this, click the Mailbox Cleanup dialogue box then locate the button named as AutoArchive. 

c) Identify and delete large e-mails.

You may then search for the emails that are above the size limit provided and delete them if they are not of any importance. This is made easier by using the Mailbox Cleanup tool. This will make some space in your Outlook inbox. You can also find the emails that are older than a certain number of days and locate and delete them.

Just fill in the number of days you would like to find articles older than and click on the Find button. OR enter a size and then click on the Find button. Then it will search the objects. Select the stuff you do not need and delete them.

One quick tip, for instance, is using the date selection feature of Outlook to delete the emails that were sent before or after a particular date. 

Alternatively, you can manually clean bulky emails from Outlook without using the feature Mailbox Cleanup. To accomplish that, follow these actions: 

Click on the Home tab to open Outlook. 

Then click on "Search Folders" in the left menu. Click New Search Folder.

Now, under the Organizing Mail section, click on Large mail.

The Customize Search Folder menu opens next, from where one can select an option according to need.

Then, in the Show mail more than box, one can enter the size of the mail and then click OK.

It will show all the emails which are more than the size limit you mention. And if you think you don't want them, you may delete those.

2. Remove Invalid Emails 

Due to this, often Outlook inboxes get filled up with duplicate items. Identical emails can be removed from your Inbox by pursuing one of the following methods: 

Open Outlook and then click on the Home tab to get into your inbox. 

Click the "Delete" drop-down menu. 

Choose "Clean Up Folder." 

In the confirmation window, click the Clean Up Folder button to complete.

Now Outlook will remove any duplicate or useless communications. 

See also: How to Increase the Outlook Mailbox Size Limit and How to Confirm It. 

"3] Have the Deleted Items folder automatically deleted whenever Outlook is restarted"

You can configure the settings in Outlook such that each time you shut down the program, it deletes all items from the Deleted Items folder. From this, you will be able to optimize Outlook in terms of storage space and ensure that all garbage items are cleared completely .

These steps will walk you through resetting Outlook every time it starts so that any deleted objects are permanently cleared.

Go into the File menu of Outlook.

Click on the Advanced tab in the opening Outlook Options window.

Select the setting for Outlook start and exit, check the "Empty Deleted Items folders when exiting Outlook" checkbox.

Finally, click OK.

Read this to remove Outlook error 0x8004060c while sending/receiving emails.

step four: save all your previous emails in a database.

Following is another manual way of archiving your old emails: 

From the File menu, select File > Info > Tools > Clean Up Old Items.

Now, in order to initiate the process of archiving, select which folders and subfolders you want to save.

Next, choose a date to archive everything that is older on that particular date.

Finally, choose the archive file and click OK to initiate the process of email archiving.

5. Move Files to OneDrive.

Doing this will free up space on Outlook by moving the attachments onto your OneDrive account. To do so, follow these steps:

First of all, right on top, in our list of emails, we find this Filter option.

Now select the option to sort by size.

Remember that you can sort these emails in the reverse order by tapping Filter > Sort by > Size again.

Next, select the email containing attachments.

Then find the "Save to OneDrive" button below your attachment and tap on it.

Now, you can delete your original email.

To move all of your email attachments to OneDrive, follow the steps outlined above. 

See also: How to Make Microsoft Outlook Run Faster and More Efficient. 

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Sixth, turn off Cached Exchange Mode.

To deactivate the warning message, you need to deactivate the Cached Exchange Mode. This feature is activated by default to help retrieve data in a much quicker pace. The feature keeps a copy of your mailbox in your system. But, this might be taking much space in your device. Delete it: 

Press the File menu button to open Outlook. 

From the Info menu, press Account Settings > Account Settings.

Now, select the current account and click the Change.

From the opened window, in order to deliver the received messages to an Outlook data file, select the check box that says Use Cached Exchange Mode.

Finally, click the Done button in order to close Outlook and reopen it. During this step, ensure the notification "Your Mailbox is almost full" still shows up.

Check out this Outlook error: The message cannot be sent at this time. 

Step7: Zip up that Outlook PST file! 

Compressing the Outlook PST file is the next step to try if it resolves the issue. To accomplish that, follow these steps: 

Launch Outlook and go to the File menu. 

Pick the Account Settings option from the menu that appears.

Now, in the Data Files tab select which Outlook data file you want to compact.

Click Settings and then Compact Now from the list.

Now, check whether the problem has been resolved after compressing of PST file.

That would be all you should know to fix your mailbox is almost full Outlook 365 message, and we hope we were of the greatest help.