Archive Office 365 mailbox (in-place archive)

Microsoft suggest the best practice for mailbox archive is in-place archive when you are using Office 365/Exchange Online/Microsoft 365. This online archive does not require to export emails into PST files, instead, an in-place archive folder appears in Outlook when it's active.

Here are the steps how we achieve:

1. Create Retention Tag

2. Create Retention Policy

3. Assign Retention Policy to particular user mailbox

4. Enable In-Place Archive

5. Wait for 72 hours for effective/Enforce to archive now (PowerShell Command)

The following is the video how you do it.

Appendix:

PowerShell to enforce in-place archive to take place:

Start-ManagedFolderAssistant -Identity “user mailbox”