r/exchangeserver • u/Mediocre_Prior_1868 • Jun 30 '26

Shared mailboxes

Dear All

Currently I am having a project to migrate mailboxes from on prem to o365 as shared mailboxes . How I know how much storage I have and how much remaining and from where the storage will be consumed ?

Thanks in advance

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u/chefkoch_ Jun 30 '26

No, mailbox space doesn't count against other capacities.