skip to primary navigationskip to content
 

How to find the full Microsoft Cloud email address of a mailbox

If using the public email address doesn't work when tyring to add a mailbox to Outlook in Exchange Online, using the full Microsoft Cloud domain email address will resolve the problem.

For example, if the email address is:

sharedmailbox@admin.cam.ac.uk (or any other mail domain)

use the full Microsoft Cloud domain email address, including its institutional prefix:

prefix-sharedmailbox@universityofcambridgecloud.onmicrosoft.com

How to find the full email address by searching the Exchange Online Global Address List (GAL) in Outlook

In the example of the UAS Service Desk shared mailbox, where:

Mailbox Display Name = UAS ACN Servicedesk
Mailbox public email address = servicedesk@uis.cam.ac.uk
Full Microsoft Cloud email address = acn-uas-servicedesk@universityofcambridgecloud.onmicrosoft.com

  1. Search Outlook Contacts for the Display Name, and click to expand the search result:

    [Outlook on a PC]


    [Outlook on a Mac]
    Full email address search

  2. Go to the E-mail Addresses tab (PC) or Details tab (Mac).
    This shows all the email addresses associated with that mailbox,
    Look for the smtp email address with the @universityofcambridgecloud.onmicrosoft.com domain:

    [Outlook on a PC]

    Full email address PC

    [Outlook on a Mac]
    Full email address Mac