Dear Laura_2022,
Good day!
Thank you for posting to Microsoft Community. We are glad to assist.
As per your mentioned description about "Dealing with and extracting emails from distributions lists which contain multiple embedded distribution lists." To understand the situation and be able to offer you relevant suggestions, we would need a little more information from you. Kindly help us in providing the following information.
- May I know if you want to extract emails address which are in Distribution List? If so, May I confirm that you checked below PowerShell command to export members from distribution list? Get-DistributionGroupMember -Identity Email | Select Name, PrimarySMTPAddress | Export-CSV "C:\Users\inema\Desktop\testDL3.csv" -NoTypeInformation -Encoding UTF8 Get-DistributionGroupMember (ExchangePowerShell) | Microsoft Learn
- May I know your current environment? Is It Exchange Hybrid, on-premises exchange (Exchange server) or pure cloud?
- Would you mind to kindly provide the screenshot of the outlook version are you using? Kindly go to File-->Office Account
We look forward to your response. Kindly note that the above requested information is required for further analysis and troubleshooting of your situation. Your patience and cooperation are much appreciated. Have a nice day!
Best regards,
Inema | Microsoft Community Moderator