Forum Discussion
Reducing mailbox size
Best practice by Microsoft is get an expanded mailbox, the Exchange Plan 2 and then the overflow from Outlook stays in the cloud and is searchable in Outlook.
You could move the older emails to a PST but I would not store them in SharePoint if you are going to keep them in Outlook. They can get corrupted if stored in a synchronizing platform. I would store on the C: Drive and backup manually to external.
Best practice by Microsoft is get an expanded mailbox, the Exchange Plan 2 and then the overflow from Outlook stays in the cloud and is searchable in Outlook.
You could move the older emails to a PST but I would not store them in SharePoint if you are going to keep them in Outlook. They can get corrupted if stored in a synchronizing platform. I would store on the C: Drive and backup manually to external.