What is the meaning by Using Use parent folder policy?

[Mahmoud Hanafi]

Dear All,

In exchange online archiving, I need to know what is the meaning of Use parent folder policy, while I am not assigning any policy for the parent folder Inbox,etc...

In this case what exactly is happen?

[#2 · Accepted solution]

If you have not explicitly assigned a tag to a folder, the Default tag will apply. Same for any subfolders.

@Tony Redmond had a nice article detailing this, but I cannot seem to find it atm. I can recommend the "Office 365 for IT Pros" book instead, where this topic is discussed in detail :)

[#3]

If it is a default folder and the retention policy assigned to the mailbox includes a folder retention tag for that folder, all items in the folder pick up that tag.

If it is not a default folder, all folders and items in the mailbox pick up the default retention tag in the policy unless a personal tag is assigned to a folder or item. 

If a personal tag is assigned to a non-default folder, all items in the folder pick up that tag.

[#4]

Thank you Tony Redmond for your valuable reply.

[#5]

Thank you so much Vasil Michev

[#6]

Hi Tony,

On that same example you are saying: "If it is a default folder and the retention policy assigned to the mailbox includes a folder retention tag for that folder, all items in the folder pick up that tag."
What happen if the retention policy includes for example 5 tags? What tag will the folder pick up?