diff --git a/Exchange/Get-LargeMailboxes.ps1 b/Exchange/Get-LargeMailboxes.ps1
new file mode 100644
index 0000000..e56623e
--- /dev/null
+++ b/Exchange/Get-LargeMailboxes.ps1
@@ -0,0 +1,4 @@
+#Find mailboxes that are larger than 100GB (for migrating to exchange online)
+Get-Mailbox -ResultSize Unlimited | Get-MailboxStatistics | Where-Object {
+    [int64]($_.TotalItemSize.Value.ToBytes()) -gt 100GB
+} | Select DisplayName, @{Name="SizeGB";Expression={"{0:N2}" -f ($_.TotalItemSize.Value.ToBytes()/1GB)}}