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Creating mailbox batches for Exchange Online migrations

Christian Hans
Last Modified: 2019-03-19
In planning to migrate to Office 365 (Exchange Online)
is there a script available to export all the mailboxes from exchange to CSV along with who has permissions to each mailbox so that some kind of batch process could be created making sure that all users are migrated along with the mailboxes they have access to? Someone has to have done this... Id think, no?
Please help and thank you,
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Ibrahim BennaTechnology Lead

There is a script available here (https://gallery.technet.microsoft.com/office/Exchange-Mailbox-Delegate-27d1e4fb) that you can use. Once you run it and get the output,  you will still need to do some work on figuring out the order. I have seen clients use Excel Pivot tables and such to get a working output but it needs some massaging to get it correct.
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