Dear Micheal Wright
Thanks for choosing Microsoft Community.
Based on your description, I know your requirement. For this, please be kindly to contact your admin and let admin edit retention policy for you.
Retention policies allow you to automatically move emails from the primary mailbox to the online archive mailbox based on certain criteria, such as the age of the email or the folder it's in.
Here are the detailed steps:
- Sign in to the Microsoft 365 admin center.
- Go to the Exchange admin center.
- Click on "Compliance management" and then "Retention policies".
- Click on the "+" button to create a new retention policy.
- Give the policy a name and description.
- Under "Retention tags", click on "Add".
- Select the type of retention tag you want to create (e.g. "Move to Archive").
- Configure the settings for the retention tag (e.g. how long to keep the email in the primary mailbox before moving it to the archive mailbox).
- Click "Save" to create the retention tag.
- Repeat steps 6-9 to create additional retention tags if needed.
- Under "Retention policy", click on "Add".
- Select the retention tags you want to include in the policy.
- Click "Save" to create the retention policy.
Once you have created the retention policy, it will automatically move emails from the primary mailbox to the online archive mailbox based on the settings you configured in the retention tags. Here is the reference: Create a Retention Policy in Exchange Online | Microsoft Learn.
Hope this can help. If there is any update, please feel free to let me know. Your understanding and co-operation are highly appreciated.
Thanks for your precious time. Have a nice day.
Sincerely
Katherine