We did a cut-over migration from on-premises Exchange 2003 to Exchange Online about 3 months ago. I just noticed my “sent folder” has history that only goes back 3 years. Were emails older than that excluded from the migration or has some age policy kicked in and vaporized those items?
Is there any way to get those back - short of rebuilding an older server and recovering from a backup?
FYI: I have no archive folders in my Outlook.