Display Name Vs Simple Display Name

In Exchange General Tab for a user, there is a Display Name field, I believe that 's what gets displayed in the Outlook address book.
in Exchange Advanced tab, there is a Simple Display Name. I wonder where does this show up in Outlook, OR whatever the purpose of it.

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It will not show up in outlook until n unless if you have any specific use.
For ex: If you want to change the simple Display Name as an External Display Name, you can do that.
Check the below blog:
jskfanAuthor Commented:
Can you please give a clear example of when to use the Simple Display Name and when you should not ?
Its depend upon your requirement. If you want to know how it works and what is the use, check the below blog:
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jskfanAuthor Commented:
if I understand  anything put in the Simple Display Name, will be seen by External users From field.

Except if the email is forwarded by another third person.

Jamie McKillopIT ManagerCommented:

Your understanding is correct.


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