An error occurred while saving the commentJonathan Brain commented
If the data is indexed and searchable for eDiscovery, it should be searchable by the end user no matter how they are connected (outlook/web). Even if its returned slowly, one search should do it all. For cloud services being the thing these days; in 2020 not having this capability in O365 seems....silly. As does the storage limitations within mailboxes on litigation hold.