Still receiving Teams Welcome E-Mails after setting -UnifiedGroupWelcomeMessageEnabled to false

[JanShhh]

I connected to Exchange Online and set the UnifiedGroupWelcomeMessageEnabled Parameter to false for every Group using this code.

$WelcomeEmailGroups = Get-UnifiedGroup | Where-Object { $_.WelcomeMessageEnabled -eq $True }
 
#Disable Welcome Email
ForEach($Group in $WelcomeEmailGroups)
{
    #Disable the Group Welcome Message Email
    Set-UnifiedGroup -Identity $Group.Id -UnifiedGroupWelcomeMessageEnabled:$false
    Write-host "Welcome Email Disabled for the Group:"$Group.PrimarySmtpAddress
}

Apparently that works because the property returned by this code is now "False" for every group.

Get-UnifiedGroup | Format-List DisplayName,WelcomeMessageEnabled

 But if I download the group report from the Azure AD the csv column "mailEnabled" still says "True" for every group. The Users still receive Welcome E-Mails.

 Has anyone experienced something similar?

[#2]

Didn't experience this, setting it to false should stop new members from receiving welcome messages. It could take some time after changing the setting perhaps? So, change setting and wait a few hours to add new members?

[#3]

@JanShhh 

Did you ever find a solution?  When I set to false the user doesn't get the Microsoft 365 group email.  (SharePoint site). They still get the email saying welcome to the team.