An Exchange Online delegate permission under which recipients see that the delegate sent the message for the mailbox owner. Send As, by contrast, conceals the delegate entirely.
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Each book explains Send on Behalf in context, with comparison tables and the common traps.
Terms in this definition
- Exchange Online
Microsoft 365's hosted service for mail, calendars and contacts. Defender for Office 365 protects these mailboxes.
- Full control
Gives every right over protected content, EXTRACT included, plus the ability to alter or strip the encryption. Owners and the Rights Management issuer always hold it.
- Send As
An Exchange Online delegate permission under which messages look as though the mailbox or group itself sent them, with nothing revealing who actually did. Send on Behalf is the alternative that shows the delegate.
Related terms
- Full Access
A permission in Exchange Online that allows a delegate to open another person's mailbox and read, create or delete items in it. It does not allow sending messages as or for the owner; that requires Send As or Send on Behalf.
- Shared mailbox
An Exchange Online mailbox owned by no single person, such as a team's info address. Several people get Full Access to read it and send from it using Send As or Send on Behalf.