Get 30 days email size
Hello,
Today I wanted to share some PowerShell lines to help you calculate the size of 30 days of email inside an Exchange Online mailbox. The first approach will also work for Exchange 2010 and up, but the the second approach require Exchange Online Compliance to work. This kind of information can be handy if you migrate some mailboxes between Office 365 tenants and you have a high constraints on the network bandwidth availability.
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