Add Scripts/Powershell/Azure/Check Email Aliases.md

Scripts/Powershell/Azure/Check Email Aliases.md

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+The uppercase `SMTP` address is the primary address, while lowercase `smtp` are aliases.  You can find the value in active directory in **"User > Attribute Editor > proxyAddresses"**.
+``` powershell
+Get-AzureADUser -ObjectId "user@domain.com" | Select -Property ProxyAddresses
+```
+
+!!! example "Example Output"
+    ``` powershell
+    smtp:alias@domain.com
+    smtp:alias@domain.onmicrosoft.com
+    SMTP:primaryaddress@domain.com
+    ```