Microsoft
MicrosoftI don't think this is a great article. Using a Unified Group shows in Outlook. It messages the users about their memberships.
If you label your group like Attack Simulation.
Then members will see a group in Outlook and get an Invitation to the "Attack Simulation Group"
MicrosoftHi ComputerHabit
To disable welcome email for dynamic groups and hide the group from address list in Outlook, you can use the following PowerShell commands:
Set-UnifiedGroup groupemail@contoso.com -HiddenFromAddressListsEnabled:$true -UnifiedGroupWelcomeMessageEnabled:$false
Reference: Set-UnifiedGroup (ExchangePowerShell) | Microsoft Learn
I disabled more. There is also a visible group in Outlook.
Set-UnifiedGroup -Identity $name -HiddenFromAddressListsEnabled:$true -HiddenFromExchangeClientsEnabled:$true -UnifiedGroupWelcomeMessageEnabled:$false
