Change Mailbox Plan

Here the parameters userid represents user s mailbox or email address value represents the sizes in gb mb or kb.

Change mailbox plan. There used to be a set casmailboxplan cmdlet in exchange online but recent changes in the service have removed that cmdlet. The mailbox plans are mostly designed to differentiate mailboxes on specific office 365 exchange online subscription types. However the names and guids match and i assume that when a mailbox plan is assigned to a mailbox that the matching cas mailbox plan is also applied. There is little sense in de coupling the two.

A mailbox plan is a template that automatically configures mailbox properties. The mailbox plan objects are designed to configure the size and other limits for each mailbox to comply with subscription limitations and changing the mailbox plan is only possible if you change the subscription in use. So there s a kiosk plan exchange online plan 1 plan 2 etc. The difference is what settings the cas mailbox plan controls.

So to set the mailbox size limit to 100 gb you can set the send limit at 99 gb. If you change the license that s assigned to an existing user the settings in the mailbox plan that s associated with the new license are applied to the user s existing mailbox. Now use the following command to check the size of the mailbox. The availability of a cas mailbox plan is determined by your selections when you enroll in the service and the age of your organization.

Get mailbox userid select quota. For example to set a mailbox size to 20 gb to set the send limit at 19 gb and to issue a warning at 18 gb run the following command. Mailbox plans correspond to license types and are applied when you license the user. The availability of a mailbox plan is determined by your selections when you enroll in the service and the age of your organization.

Like a mailbox plan a cas mailbox plan controls the settings that are applied to mailboxes on creation. Like mailbox plans cas mailbox plans correspond to license types and are applied to a mailbox when you license the user. As with mailbox plans cas mailbox plans take effect for newly created mailboxes not for existing mailboxes. The only way to use a mailbox plan to modify the settings on an existing mailbox is to assign a different license to the user which will apply the corresponding mailbox plan to the mailbox.

Note in this command the user id placeholder represents a mailbox user s upn email address or guid and the value placeholder represents a number in megabytes mb kilobytes kb or gigabytes gb.