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Outlook Send On Behalf
Outlook Send On Behalf
If another user or an administrator has enabled it, you may have the option to send an email on behalf of another user.
Instructions
From new Outlook, open a new email message.
Above the To line, select From, then select the other person's mailbox. If necessary, select Other email address..., then enter that email address, then select it.
(If From isn't visible next to the To button, make it visible by going to the ribbon and under the Options tab select Show From.)
Finish composing the email, then select Send.
Recipients of the message will see that it is sent by you on behalf of the other person.