I’m trying to connect Soft Deleted mailboxes using EWS Managed API and observed following behaviour when deleted:

Has M365 retention policy applied pre deletion -> Removed M365 user account -> Mailbox soft deleted and converted to inactive mailbox.Has no M365 retention policy applied pre deletion -> Removed M365 user account -> Mailbox soft deleted but doesn’t get converted to inactive mailbox.

As per my understanding, mailbox data is retained for 30 days after the account is removed irrespective of the fact that if it is an inactive mailbox or not. I’m able to fetch root folder for Inactive soft deleted mailbox using ExchangeService instance, but for soft deleted mailbox which is NOT inactive, I’m getting error ‘ErrorNonExistentMailbox: The SMTP address has no mailbox associated with it‘.

How can we fetch soft deleted mailbox root which is NOT inactive? In other words how can we fetch soft deleted mailbox which didn’t had any retention policy applied?

Additionally observed that PowerShell ‘Get-Mailbox’ property RecipientSoftDeletedStatus has value ‘1’ for mailbox where IsInactivemailbox is False and ‘9’ where IsInactivemailbox is True. What does RecipientSoftDeletedStatus values indicate?

​I’m trying to connect Soft Deleted mailboxes using EWS Managed API and observed following behaviour when deleted:Has M365 retention policy applied pre deletion -> Removed M365 user account -> Mailbox soft deleted and converted to inactive mailbox.Has no M365 retention policy applied pre deletion -> Removed M365 user account -> Mailbox soft deleted but doesn’t get converted to inactive mailbox.As per my understanding, mailbox data is retained for 30 days after the account is removed irrespective of the fact that if it is an inactive mailbox or not. I’m able to fetch root folder for Inactive soft deleted mailbox using ExchangeService instance, but for soft deleted mailbox which is NOT inactive, I’m getting error ‘ErrorNonExistentMailbox: The SMTP address has no mailbox associated with it’. How can we fetch soft deleted mailbox root which is NOT inactive? In other words how can we fetch soft deleted mailbox which didn’t had any retention policy applied? Additionally observed that PowerShell ‘Get-Mailbox’ property RecipientSoftDeletedStatus has value ‘1’ for mailbox where IsInactivemailbox is False and ‘9’ where IsInactivemailbox is True. What does RecipientSoftDeletedStatus values indicate?  Read More

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