Change retention of Recover Deleted Items Folder

Question

Hi,

I am going to set recover deleted items folder retention in Outlook to be 30 days. I will do it from MailboxPlan cmdlet

set-MailboxPlan -Identity 'ExchangeOnlineEnterprise-464547df-b2de-450b-a94a-73fb6e925a86' -RetainDeletedItemsFor 30.00:00:00

and use another cmdlet to set retention for existing user

Get-Mailbox -ResultSize unlimited -Filter "RecipientTypeDetails -eq 'UserMailbox'" | Set-Mailbox -RetainDeletedItemsFor 30

Question is, how it will impact existing users. If a user is at 70 GB, increasing the retaindeleteitemsfor will cause increase in size of mailbox as well? Does recover delete items folder count towards mailbox quota?

Answer 1

Hi @Hasan Siddiqui

We could refer to the introduction of the Recoverable Items folder in the official document: Recoverable Items folder in Exchange Online

The Recoverable Items folder has its own storage quota. So it doen't count towards mailbox quota.

In addition, the storage quota for the Recoverable Items folder is automatically increased from 30 GB to 100 GB when a hold is placed on a mailbox in Exchange Online. If the archive mailbox is enabled, the storage quota for the Recoverable Items folder in the archive mailbox is also increased from 30 GB to 100 GB.

Detailed information can be seen here: Increase the Recoverable Items quota for mailboxes on hold
And you could also refer to the Exchange Online limits which list different storage quota in detail

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