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Change mailbox size in Exchange 2007, 2010 and 2013

Change mailbox size in Exchange 2007, 2010 and 2013
Jude talks us through how to change Mailbox size in Exchange 2007, 2010 and 2013

One of the questions I regularly get asked is how to change the size per mailbox in Microsoft Exchange. I've put together a handy how-to guide below, taking into account the different versions of Exchange. So, without further ado, let's go!

If you're interested in migrating to Office 365, download this guide by our  install team


Exchange 2007 and Exchange 2010


Both Exchange 2007 and Exchange 2010 allow you to configure mailbox quotas, either on a global level (across all users), or on each individual mailbox. To set this up globally in Exchange 2007 and Exchange 2010, open up the Exchange Management Console on your Exchange Server. Expand Organization Configuration, then click on "Mailbox". Right click on your Database, and click on Properties, then the Limits tab.

Click on the Limits tab

Set the mailbox limits as per your organisational requirements, taking your server storage into consideration. You might also want to configure Exchange to send warnings to users when they hit a specified threshold.

You can also manage storage on a per-mailbox basis. Within the Exchange Management Console, open up Recipient Configuration, then expand Mailboxes. Right click on a mailbox, and select Properties, choosing the Mailbox Settings tab

Mailbox Settings

Double click on Storage Quotas. You have the same control as before, but this will only effect the selected user's mailbox.

Exchange 2013


To change the organisational quota defaults in Exchange 2013, open up the Exchange Administration Console from your Exchange Server. Open Databases, then click Limits. Although the layout in Exchange 2013 is somewhat different, the controls you have here are almost identical.

The Limits tab

To set control on an individual mailbox, open Recipients, and double-click on your chosen mailbox. Click on Mailbox Usage, then customize your settings accordingly. You'll notice some nice new features here, including a live usage statistic for each mailbox.

Mailbox Usage


Remember to save your settings once you're done.

And that's it, your mailbox limits have been changed!

Did you know Microsoft Exchange 2007 and 2010 are end of life?

If you’re still using Exchange 2007 or 2010, it’s time to consider moving to Exchange Online or upgrading your Exchange Server to 2013, 2016 or 2019. Once Exchange reaches end of life it is no longer supported by Microsoft, which makes it a sitting duck for cyber attacks. In this other blog, I outline your options if you need to move on from Exchange 2007 or 2010.


Want to change mailbox size in Exchange 2016 or 2019?


Perhaps you've moved to a newer version of Exchange but you need some help changing mailbox size there, check out this other guide, Alex wrote:


office 365 migration guide download


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  1. Frank Hughes

    Excellent article, clearly written by a truly skilled professional.

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  2. Richard Ringled

    Gentlemen - This article is misleading I am looking to increase the mailbox size of a user in Exchange 2010 from 5Gb to 10Gb and am having a problem finding the correct syntax for the Management console. This article is not helpful for this can you assist?? Thanks,

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  3. Abdelrahim

    how can i increase mail box size?

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