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How to Send New Outlook Emails from a Delegate Account
Question details
The user needs to properly configure and send new emails using a delegated mailbox in Classic Outlook without the sender address reverting.
- Product
- Microsoft Outlook
- Device & OS
- not provided
- Scenario
- Attempting to compose and send a new email using the 'From' address of a delegated account.
- Observed behavior
- Classic Outlook allows replying to emails from the delegated mailbox, but it fails to retain the selected 'From' address when composing new messages.
Before attempting to modify Outlook settings, ensure that you have network connectivity to the Exchange server and have your IT administrator's contact details handy, as you may need server-side permission verification.
Verify and Request Mailbox Delegation Permissions
Ensuring the correct Exchange permissions are explicitly set is the most common and effective fix for the 'From' address reverting to the primary account.
In Microsoft Exchange environments, simply having access to a shared inbox is not enough to send new emails from it. The administrator must explicitly grant either 'Send As' or 'Send on Behalf' permissions.
Reach out to your organization's Exchange or IT Administrator to verify your current mailbox access levels.
Ask the administrator to confirm that you have explicitly been granted 'Send As' or 'Send on Behalf' permissions for the delegate account in the Exchange Admin Center.
If the administrator has just applied the permissions, allow up to 24 hours for the server changes to fully propagate across the network and to your client.
Open Outlook, click 'New Email', click the 'From' dropdown, select the delegated email address, and send a test message to ensure the setting is now retained.
Create a New Outlook Profile and Enable Cached Exchange Mode
A corrupted Outlook profile can prevent delegate features from functioning correctly. Creating a fresh profile ensures a clean sync with the server.
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Frequently Asked Questions
Why does the 'From' address revert to my primary account in Outlook?
This typically occurs when your account lacks the necessary 'Send As' or 'Send on Behalf' permissions on the Exchange server, or if your local Outlook profile data is corrupted and failing to synchronize properly with the server.
What is the difference between 'Send As' and 'Send on Behalf'?
'Send As' makes the email appear as if it was sent directly by the delegated mailbox owner, keeping your identity hidden. 'Send on Behalf' will display 'Your Name on behalf of Delegate Name' in the recipient's inbox.
Where are emails saved after sending them from a delegate account?
By default, sent emails are saved in the primary sender's 'Sent Items' folder. However, administrators can configure the server or modify the 'DelegateSentItemsStyle' Windows registry key to save a copy directly in the shared mailbox's 'Sent Items' folder.
