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I just came across an instance where a Microsoft partner was using the recommended Exchange Online to migrate a company's users from Google to Microsoft 365. However, I saw that the person had an option to access Email data for all the users in that organization. There is a actual option to be able to do so. I wonder, why is that option needed? Why would someone who just needs to migrate the email data from Google to Microsoft have access to the users' mails? How can this be prevented while allowing that organization to be able to still migrate the data? Which role should be assigned to them so they don't have access to mails but can still migrate drive and mail data?
Well, thats the thing, if this is an IMAP migration, I dont think you have a choice but to give full access to the mailboxes.
Thank You so much for your time and help. Really Appreciate.
If doing an IMAP migration, its required.
However, are you referring to this? I see nothing here that states full access is required
https://learn.microsoft.com/en-us/exchange/mailbox-migration/automated-migration-neweac
Thank you for your response. It is not "required" of course. My worry arises from the revealation that the person doing the Migration has access to all the mailboxes and the data in them. So, I was wondering if there was a role I can assign to him which would not hinder his ability to migrate the mailboxes but not allow him access to the mails themselves. For now he has Global Administrator and 4-5 other highest level permissions, which I assumed were needed for him to do the migration.