Microsoft 365

Get-CASMailbox

SafeMailbox client access

Get-CASMailbox <upn>

Shows which protocols (OWA/IMAP/POP/ActiveSync) are enabled; mail triage.

Examples

Syntax

Get-CASMailbox <upn>

Before you run it

Read-only.

Used when you see

Can't open a shared mailbox
3
Verify protocol access (OWA/Outlook)Grants can take up to an hour to propagate.
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