Easy Tech TutsHow to Send on Behalf Of in Outlook Easily 2026
By Impran M N
Managing executive correspondence or a shared mailbox shouldn't mean logging in and out of separate profiles. This guide covers granting Send on Behalf Of permissions, revealing the hidden From field in your compose window, and confirming the message displays correctly to recipients.
01Grant delegate permissions
The mailbox owner or manager needs to grant you Send on Behalf Of rights through their account settings.
02Reveal the From field
Open a new email and enable the Show From option in the ribbon.
03Select the alternative sender
Click the From dropdown and choose Other Email Address.
04Look up the target mailbox
Search for and select the owner's mailbox identity from your organization's directory.
05Compose and test
Write your message and send a test email to confirm it displays correctly to the recipient.
Frequently asked questions
Will the recipient know I sent it on someone else's behalf?
Yes, the recipient-facing header typically shows both your name and the mailbox owner's, making the delegation transparent.
Do I need admin permission to set this up?
You need the mailbox owner or an admin to explicitly grant Send on Behalf Of rights before the option becomes available.
Why don't I see the From field in my compose window?
The From field is hidden by default, so you need to enable Show From through the ribbon before you can select an alternative sender.
What if my test email bounces back?
This usually points to a permission mismatch or an outdated offline mailbox cache, so recheck your delegate rights and refresh your cache.
Watch the full walkthrough
The same steps, demonstrated on screen from start to finish.
