Mailbox delegation vs Send As: when to use which
Overview
Delegation lets User A open/manage User B’s mailbox; Send As sends as another identity. Confusion causes compliance violations.
Delegation
Executive assistants, shared inbox triage—Full Access + Send As or Send on Behalf as needed.
Send As
Service accounts, automated responses that need consistent sender identity—limit who has permission.
Auditing
Review permissions quarterly; remove stale delegates when staff depart.
Security
MFA on all delegates; warn against personal devices accessing executive mailboxes without MDM.
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