By Sophia | Last Updated
If your mailbox exceeds one or more size limits set by the administrator, emails cannot be sent or received. In this case, you have to increase Outlook mailbox size limit or erase the mailbox. To ease Outlook mailbox, you can see how to delete emails in Outlook. In this article, we aim to show you how to view and increase Outlook mailbox size limit.
Step 1: Open Mailbox Cleanup window.
In Outlook 2007: Click on Tools from the Menu Bar and select Mailbox Cleanup in the drop-down.
In Outlook 2010/2013/2016: click on File, go to Mailbox Cleanup section and tap on the down arrow next to it.
Step 2: In the Mailbox Cleanup window, click on View Mailbox Size. When the Folder Size window popups, you can view mailbox size limit in Outlook.
You can increase mailbox size limit in Outlook by change settings in Registry Editor.
Step 1: Press Windows + R key to invoke Run dialog box. Input regedit and Enter to open Registry Editor.
Step 2: In the left pane, expand My Computer. Navigate to the following directory.
For Outlook 2007: HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\12.0\Outlook\PST
For Outlook 2010: HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\14.0\Outlook\PST
For Outlook 2013: HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\15.0\Outlook\PST
For Outlook 2016: HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\16.0\Outlook\PST
Note: If you cannot find any folders above, right-click to create a new key and rename it.
Step 3: Find out four DWORD in the right filed as below:
MaxFileSize
Step 4: Right-click on each item above and select Modify.
Step 5: When the Edit DWORD (32-bit) Value window, input the value in the box under Value Data. Once you do not see any item on the list, go to the steps in the following.
Note: The conversion between units list here:
1GB=1*1024*1024*1024byte; 1MB=1*1024*1024byte; 1KB=1*1024byte.
Step 6: Right-click to create NewDWORD (32-bit) Value. Rename it as we have mentioned in Step 3. Repeat the Step 4 to Step 5. Close Registry Editor and launch your Outlook to check the changes affect or not.
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