Adding shared mailbox as sender

IMK 531 Reputation points
2024-09-05T11:58:48.4066667+00:00

Hi

I have created a shared mailbox and added licensed users as members for this shared mailbox.

Shared mailbox appeared to users Outlook, as expected, but we have a problem adding this shared mailbox address as sender.

When I open new mail, click From button, search company address book for this shared mailbox email address, choose this and send the email, it works as expected. Problem is, that this email address do not stay in the From dropdown.

If I click From button, I just type the shared mailbox email address, instead of adding it via searching from the company address book, I can add email address as sender and in this case shared mailbox's email address stays in the From dropdown but when user tries to send email from shared mailbox's email address this way, user gets NDR saying that user do not have permission to send from this email.

User needs to search every time from the company address book for this email address, to send email from this shared mailbox, which of course is not very feasible.

User has total of 3 email addresses in the From dropdown. User is a member in the shared mailbox and has Read and Send As permissions.

What could be the reason, why this email address do not stay in the From dropdown, when searched via address book, as it normally does?

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  1. Bruce Jing-MSFT 4,115 Reputation points Microsoft Vendor
    2024-09-06T06:13:16.6166667+00:00

    Hi，@IMK

    Thanks for posting your question in the Microsoft Q&A forum.

    Based on your description, I ran the same test:

    1.Create a shared mailbox and add me as a member.

    User's image

    2.Trying to send an email from a shared email address in Outlook, but the shared email address is not found in the From dropdown box.

    User's image

    This test results in the same as you describe, so I looked up the official Microsoft documentation and found that this is the expected behavior.

    User's image

    If my answer is helpful to you, please mark it as the answer so that other users can refer to it. Thank you for your support and understanding.

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