This article applies to Exchange accounts only. For Web Hosting and Custom Email accounts, see the article What Is The Mailbox Size.

Important note: Any changes made to a global or individual mailbox or public folder storage limits will be visible on the respective page immediately; however, they can take anywhere from 15 to 120 minutes to propagate through the Active Directory domain and become effective. This process will take longer if there are disabled or very large mailboxes or folders.

To change settings and defaults for all mailboxes/folders:

  1. Log in to CONTROL PANEL for your Exchange account and navigate to Services > Mailboxes > Disk Quota Management. On this page, you can change settings for all mailboxes/folders on your account and save these settings as default.
  2. Change the settings you want to apply and click Save Changes. Note: Any limits set on individual mailboxes will override the overall limits set on this page for that mailbox.

Storage management for mailboxes 

You can control the size of individual mailboxes by establishing send and receive limits for the mailboxes in your account.

To change settings for individual mailboxes:

  1. In CONTROL PANEL, on the Services > Mailboxes > Disk Quota Management page, select Manage Individual Mailboxes option. On the Manage Individual Mailboxes page, you will see the list of mailboxes and the list of parameters for each mailbox.
  2. To search for mailboxes type a few letters of the mailbox display name or email address in the search box, and click Apply filter. Click Clear All to show the entire list of mailboxes.
  3. Change settings as necessary.
  4. Click Save Changes.  

 To change settings for multiple mailboxes at the same time:

  1. On the Manage Individual Mailboxes page, search for mailboxes to show a list of the mailboxes you want to modify.
  2. Change the settings for the first mailbox.
  3. Click the down arrow next to each setting to copy the same setting for all the mailboxes below the first mailbox.
  4. Click Save Changes.

Storage management parameters for mailboxes are:

  • Send Limit (MB): The mailbox owner will be prohibited from sending email when the Send Limit has been reached.
  • Send and Receive Limit: The mailbox owner will be prohibited from sending and receiving email when the Send and Receive Limit has been reached.
  • Disable All Limits: This option removes all send and receive limits for the mailbox. This allows the mailbox to expand in size until the total amount of disk space for the Exchange account has been used.
  • Notify Admins: If this checkbox is selected for a mailbox, the account owner and technical administrators will receive email notification when the mailbox reaches 90% of its Send Limit. When this happens, the account owner can either log in to CONTROL PANEL and increase the limit for the mailbox, or contact the user with a request to delete or archive items.
  • Notify User: If this checkbox is selected for a mailbox, the mailbox owner will receive email notification when the mailbox reaches 90% of its Send Limit. When this happens, the user can either delete or archive old items, or ask the account owner to increase the limits for the mailbox.
    Note: The notifications are sent via a script on the Exchange servers and are based on the mailbox space in use at the time the script runs, which is currently 3 AM Pacific Time.  If the mailbox has not reached 90% capacity when the script runs, the notification will not be sent.  For this reason, if a user were to receive a large attachment between “script runs” that caused the mailbox to reach the set limit, they could possibly be prohibited from sending or receiving mail without ever receiving a notification.
  • Size (MB): The current size of the mailbox contents.
  • Items: The total number of items in the mailbox. Note that this number includes hidden (system) mailbox items.

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Storage management for public folders 

You can restrict the size of your public folders by establishing maximum individual file size and an overall size limit for the folders in your account.

To change settings for individual folders:

  1. In CONTROL PANEL, on the Services > Mailboxes > Disk Quota Management page, select Manage Individual Folders option. On the Manage Individual Folders page, you will see the list of folders and the list of parameters for each public folder.
  2. To search for folders, do any of the following:
    • Click Alphabet link and select a letter to show all folders that begin with that letter.
    • Select the type of search from the dropdown, type a few letters of the folder name in the search box, and click Apply filter.
    • Click View All to show the entire list of folders. 
  3. Change settings as necessary.
  4. Click Save Changes

To change settings for multiple folders at the same time: 

  1. On the Manage Individual Folders page, search for folders to show a list of the folders you want to modify. To search for folders, you can:
    • Click Alphabet link and select a letter to show all folders that begin with that letter.
    • Select the type of search from the dropdown, type a few letters of the folder name in the search box, and click Apply filter.
    • Click View All to show the entire list of folders.
  2. Change the settings for the first folder.
  3. Click the down arrow next to each setting to copy the same setting for all the folders below the first folder.
  4. Click Save Changes.

Storage management parameters for folders are:

  • Prohibit Post At (MB): All users will be prohibited from posting new items to the folder when the Prohibit Post limit is reached.
  • Max Item Size (MB): All users are prohibited from posting new items larger than the Max Item Size.
  • Disable All Limits: This option removes all limits for the public folder. This allows folders to expand in size until the total amount of disk space on the Exchange account has been used.
  • Notify Owner: If this checkbox is selected for a folder, the account owner and technical administrators will receive email notification when the public folder reaches 90% of its storage limit. When this happens, the account owner can either log in to CONTROL PANEL and increase the limit for the folder, or delete or archive items.
    Note: The notifications are sent via a script on the Exchange servers, and are based on the public folder space in use at the time the script runs, which is currently 3 AM Pacific Time. If the public folder has not reached 90% capacity when the script runs, the notification will not be sent. For this reason, if a large item gets posted between “script runs” that causes the folder size to reach the limit, users could be prohibited from posting items without ever receiving a notification.
  • Size (MB): The current size of the public folder contents.
  • Items: The total number of items in the public folder.

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