Forum Discussion
Bixby1960
Mar 03, 2025Copper Contributor
Microsoft Purview best practices
I am wondering what the best way to accomplish this would be. We are working at stepping down our email retention periods from 10 years to 5 years. We currently have a 10-years policy that uses a dy...
Bixby1960
Mar 04, 2025Copper Contributor
This is where it gets confusing. I've read that page as well and it also states that the shortest deletion period wins. Since our policies are simple delete policies (when an email reaches 5 years in age it is deleted, same with the 7-year policy) I read this as meaning that the 5-year policy will win out. In other words, we are setting policies that say you can't delete anything before it reaches 5 years. Anyone can delete an email when they want. We are just doing 'house cleaning' policies that will limit how much email will be allowed to be kept in a mailbox.
I hope this makes sense.
VasilMichev
Mar 05, 2025MVP
Right, well you didn't mention that those are "delete" policies, so I assumed wrong above, sorry about that. Yes, "shortest deletion" wins. You can however use a policy with "retain then delete" type of action, which will ensure that items are retained for X years, and once the period ends, will be deleted.
If you are using purely "delete" policies, without the retain component, user will actually NOT be prevented from deleting items, even before the period expires. And for such policies, the shortest period wins.