Not too long ago, I received a ticket from a user who was having quota issues and could not account for what was using up their Exchange quota. With a simple Exchange Management Shell one-liner, I was able to provide a list of every folder in that user’s mailbox, the number of items in each folder, and size of the folder contents:

[PS] E:\working\scripts>Get-MailboxFolderStatistics jane.user | sort-object item
sinfolder -descending | ft Name, FolderPath, ItemsInFolder, FolderSize -auto

Name                     FolderPath     ItemsInFolder FolderSize
----                     ----------     ------------- ----------
Inbox                    /Inbox                    33 103574B
Calendar                 /Calendar                 25 64012B
Deleted Items            /Deleted Items             7 9101B
Sent Items               /Sent Items                6 7690B
Notes                    /Notes                     0 0B
Outbox                   /Outbox                    0 0B
Tasks                    /Tasks                     0 0B
RSS Feeds                /RSS Feeds                 0 0B
Contacts                 /Contacts                  0 0B
Top of Information Store /                          0 0B
Drafts                   /Drafts                    0 0B
Junk E-Mail              /Junk E-Mail               0 0B
Journal                  /Journal                   0 0B

But wait, there’s more. As mentioned in my previous article, I’ve encountered issues with folders which have leading or trailing whitespace in their name. Sure enough, I was able to crank out a simple one-liner to list all  folders possessing this defect:

[PS] E:\working\scripts>get-mailbox -resultsize unlimited | Get-MailboxFolderSta
tistics | where {($_.Name -like "* ") -or ($_.Name -like " *")} | fl Name,Identi
ty,FolderPath
[PS] E:\working\scripts>get-mailbox -resultsize unlimited | Get-MailboxFolderSta
tistics | where {($_.Name -like "* ") -or ($_.Name -like " *")} | fl Name,Identi
ty,FolderPath